CN201787875U - Code disc reading slide caliper - Google Patents

Code disc reading slide caliper Download PDF

Info

Publication number
CN201787875U
CN201787875U CN201020272419XU CN201020272419U CN201787875U CN 201787875 U CN201787875 U CN 201787875U CN 201020272419X U CN201020272419X U CN 201020272419XU CN 201020272419 U CN201020272419 U CN 201020272419U CN 201787875 U CN201787875 U CN 201787875U
Authority
CN
China
Prior art keywords
counter
wheel
gear
calliper rule
slide calliper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201020272419XU
Other languages
Chinese (zh)
Inventor
姜国根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201020272419XU priority Critical patent/CN201787875U/en
Application granted granted Critical
Publication of CN201787875U publication Critical patent/CN201787875U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

The utility model relates to a code disc reading slide caliper. The conventional slide caliper has a certain apparent value error in the reading process. The code disc reading slide caliper comprises a caliper body, a gear accelerating mechanism and a code disc counter. The gear accelerating mechanism and the code disc counter are arranged in a caliper frame in the caliper body. The gear accelerating mechanism comprises a plurality of accelerating mechanism passing wheels, caliper passing wheels, caliper passing wheel brackets and springs. A pair of caliper passing wheels are symmetrically arranged on both sides of a center gear. The spring and the caliper passing wheel bracket are arranged between each pair of caliper passing wheels. The code disc counter comprises a plurality of counter code discs, counter gear shafts, counter gears and counter dial wheels. The counter dial wheels are respectively arranged between every two counter gear shafts. The utility model can display visually, reduces the apparent value error, is convenient to use the caliper and also reduces the manufacturing cost.

Description

A kind of code wheel reading slide caliper
Technical field
The utility model belongs to the Technology of Precision Measurement field, and especially relating to a kind of device has counter can show the slide calliper rule of measured value with code-disc.
Background technology
Slide calliper rule are the general dimensional measuring instruments of chi shape portable, are mainly used in the measurement internal diameter, external diameter, the ladder and the degree of depth etc.On measuring principle, mainly divide three types at present:
1) vernier caliper.Its principle is to utilize the ruling span (abbreviation line-spacing) on the main scale and the difference of the line-spacing on the vernier scale to read fraction part.So when measuring, the integral part of value is read from main scale, fraction part is read from vernier scale.There is certain apparent value error during reading.
2) dial caliper.This class slide calliper rule device has display dial, is that tooth pitch with accurate tooth bar, gear is as known length, with the indicating gauge that the has corresponding calibration big shape portable dimensional measuring instrument as amplification, segmentation and indicating section.These class slide calliper rule are when measuring, and the integral part of value is read from main scale, and fraction part is read from dial plate.Dial caliper can improve the apparent value error problem of vernier caliper, but still will distinguish reading, can't directly obtain measurement data.
3) digimatic calipers.Adopt measuring systems such as holding grid, magnetic grid, can show the dimensional measuring instrument of measuring indicating value with digital form.This class slide calliper rule reading is directly perceived, but manufacturing cost than higher, to the requirement of manufacturing technology level and Electronic Design level also than higher.
Summary of the invention
The purpose of this utility model provides a kind of slide calliper rule that the counter code-disc shows that have, and also can directly read reading from code-disc by the counters count measured data.Under lower manufacturing cost, effectively reduce the apparent value error, and improve the ease of use of slide calliper rule.The purpose of this utility model is to realize by following technical scheme:
A kind of code wheel reading slide caliper comprises chi body, gear acceleration mechanism and Weight and disk type counter.
Described chi body comprises blade and chi frame; In the rach slot of blade tooth bar is installed, the teeth of tooth bar are provided with down; The chi frame is enclosed within on the blade, can produce relative slide displacement along blade.Be provided with gear acceleration mechanism and Weight and disk type counter in the chi frame.
Described gear acceleration mechanism comprises that the first acceleration mechanism third wheel, the second acceleration mechanism third wheel, the 3rd acceleration mechanism third wheel, central gear, the first slide calliper rule third wheel, the second slide calliper rule third wheel, the 3rd slide calliper rule third wheel, the 4th slide calliper rule third wheel, first slide calliper rule are crossed wheel support, second slide calliper rule are crossed wheel support, first spring and second spring;
Be disposed with first acceleration mechanism third wheel and the central gear on the central axis of rear end cap and cover plate from front to back, the first acceleration mechanism third wheel and the coaxial setting of central gear; The both sides of central gear are symmetrically arranged with the first slide calliper rule third wheel and the second slide calliper rule third wheel; Be disposed with first spring from front to back between the first slide calliper rule third wheel and the 3rd slide calliper rule third wheel and first slide calliper rule are crossed wheel support, the first slide calliper rule third wheel, the 3rd slide calliper rule third wheel, first spring and first slide calliper rule are crossed the coaxial setting of wheel support.Described the 3rd slide calliper rule third wheel passes cover plate, and it is terminal and rear end cap is movable is provided with;
Be disposed with second spring from front to back between the second slide calliper rule third wheel and the 4th slide calliper rule third wheel and second slide calliper rule are crossed wheel support, the second slide calliper rule third wheel, the 4th slide calliper rule third wheel, second spring and second slide calliper rule are crossed the coaxial setting of wheel support.The 4th slide calliper rule third wheel passes cover plate, and it is terminal and rear end cap is movable is provided with; The 3rd slide calliper rule third wheel and the 4th slide calliper rule third wheel respectively with denticle in tooth bar engagement.
The first acceleration mechanism third wheel and the engagement of the second acceleration mechanism third wheel directly over it, the second acceleration mechanism third wheel passes the movable setting of front end end cover, the coaxial setting of the second acceleration mechanism third wheel of the 3rd acceleration mechanism third wheel and its rear end, the first counter gear axle engagement of the 3rd acceleration mechanism third wheel and its below.
Described Weight and disk type counter comprises the first counter gear axle, the second counter gear axle, the 3rd counter gear axle, the four-counter gear shaft, the 5th counter gear axle, first counter gear, second counter gear, the 3rd counter gear, the four-counter gear, the 5th counter gear, the 6th counter gear, the first counter code-disc, the second counter code-disc, the 3rd counter code-disc, the four-counter code-disc, the 5th counter code-disc, the first counter thumb wheel, the second counter thumb wheel, the 3rd counter thumb wheel and four-counter thumb wheel.On the first counter gear axle from the counter front panel to being coaxially arranged with the first counter code-disc and first counter gear between the counter rear panel successively, on the second counter gear axle from the counter front panel to being coaxially arranged with the second counter code-disc and second counter gear between the counter rear panel successively, on the 3rd counter gear axle from the counter front panel to being coaxially arranged with the 3rd counter code-disc between the counter rear panel successively, the 3rd counter gear and four-counter gear, be coaxially arranged with four-counter code-disc and the 5th counter gear from the counter front panel successively between the counter rear panel on the four-counter gear shaft, on the 5th counter gear axle from the counter front panel to being coaxially arranged with the 5th counter code-disc and the 6th counter gear between the counter rear panel successively, all counter gear axle equal altitudes are provided with; First counter gear is by the first counter thumb wheel and the engagement of second counter gear, second counter gear is by second counter thumb wheel and the four-counter gearing mesh, the 3rd counter gear is by the 3rd counter thumb wheel and the engagement of the 5th counter gear, the 5th counter gear is by four-counter thumb wheel and the engagement of the 6th counter gear, each thumb wheel is positioned at the below of the contiguous counter gear shaft line of centres, and each thumb wheel all is in sustained height.
The utility model is compared with background technology, and the useful effect that has is:
1. adopt counters count measured, show survey measurements, need not read the reading of integer-bit and decimal place respectively by code-disc; Show more intuitively, reduced the apparent value error, made things convenient for the use of slide calliper rule.
2. adopted the physical construction of precision gear for the basis, compare manufacturing process with electronic caliper simpler, and cost reduces significantly when guaranteeing measuring accuracy.
Description of drawings
Fig. 1 is the denticle structural representation;
Fig. 2 is gear acceleration mechanism and Weight and disk type counter vertical view cutaway drawing;
Fig. 3 is gear acceleration mechanism and Weight and disk type counter drive mechanism cut-open view;
Fig. 4 is that the utility model is faced partial sectional view.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of code wheel reading slide caliper comprises chi body, gear acceleration mechanism and Weight and disk type counter.The chi body comprises blade 1 and chi frame 2; Tooth bar 3 is installed in the rach slot of blade 1, and the teeth of tooth bar 3 are provided with down; Chi frame 2 is enclosed within on the blade 1, can produce relative slide displacement along blade 1.Be provided with gear acceleration mechanism and Weight and disk type counter in the chi frame 2.When carrying out linear measure longimetry, pulling chi frame 2 makes slide calliper rule two pawls move to position to be measured.In moving process, five shown numerals of observation port on the chi frame 2 constantly change.Stop until moving, the numeral that this moment, each observation port showed is a numerical digit of corresponding measured value respectively.
As shown in Figures 2 and 3, the gear acceleration mechanism comprises that the first acceleration mechanism third wheel 4-1, the second acceleration mechanism third wheel 4-2, the 3rd acceleration mechanism third wheel 4-3, central gear 5, the first slide calliper rule third wheel 6-1, the second slide calliper rule third wheel 6-2, the 3rd slide calliper rule third wheel 6-3, the 4th slide calliper rule third wheel 6-4, first slide calliper rule are crossed wheel support 7-1, second slide calliper rule are crossed wheel support 7-2, the first spring 8-1 and the second spring 8-2.
Be disposed with the first acceleration mechanism third wheel 4-1 and central gear 5, the first acceleration mechanism third wheel 4-1 and central gear 5 coaxial settings from front to back on the central axis of rear end cap 9 and cover plate 10, its cooperation is
Figure BSA00000206388200031
Interference fit; The both sides of central gear 5 are symmetrically arranged with the first slide calliper rule third wheel 6-1 and the second slide calliper rule third wheel 6-2, and the first slide calliper rule third wheel 6-1 and the second slide calliper rule third wheel 6-2 mesh with central gear 5; Be disposed with the first spring 8-1 from front to back between the first slide calliper rule third wheel 6-1 and the 3rd slide calliper rule third wheel 6-3 and first slide calliper rule are crossed wheel support 7-1, the first slide calliper rule third wheel 6-1, the 3rd slide calliper rule third wheel 6-3, the first spring 8-1 and first slide calliper rule are crossed the coaxial setting of wheel support 7-1.The 3rd slide calliper rule third wheel 6-3 passes cover plate, its terminal and rear end cap 9 movable settings, and its cooperation is
Figure BSA00000206388200041
Clearance fit.
Be disposed with the second spring 8-2 from front to back between the second slide calliper rule third wheel 6-2 and the 4th slide calliper rule third wheel 6-4 and second slide calliper rule are crossed wheel support 7-2, the second slide calliper rule third wheel 6-2, the 4th slide calliper rule third wheel 6-4, the second spring 8-2 and second slide calliper rule are crossed the coaxial setting of wheel support 7-2; The 4th slide calliper rule third wheel 6-4 passes cover plate, its terminal and rear end cap 9 movable settings, and its cooperation is
Figure BSA00000206388200042
Clearance fit.
The 3rd slide calliper rule third wheel 6-3 and the 4th slide calliper rule third wheel 6-4 respectively with denticle in tooth bar 3 engagement; When measuring attachable mechanical stage frame 2, the 3rd slide calliper rule third wheel 6-3 and the 4th slide calliper rule third wheel 6-4 rotate along tooth bar 3 simultaneously, the 3rd slide calliper rule third wheel 6-3 drives the 3rd slide calliper rule third wheel 6-3, the first spring 8-1 and first slide calliper rule are crossed wheel support 7-1 rotation, the 4th slide calliper rule third wheel 6-4 drives the second slide calliper rule third wheel 6-2, the second spring 8-2 and second slide calliper rule are crossed wheel support 7-2 rotation, rotate with the central gear 5 of the first slide calliper rule third wheel 6-1 and second slide calliper rule third wheel 6-2 engagement, the back lash is by the first spring 8-1 and first spring 8-2 compensation; Central gear 5 drives the first coaxial acceleration mechanism third wheel 4-1 and rotates.
As shown in Figure 3, the first acceleration mechanism third wheel 4-1 and the engagement of the second acceleration mechanism third wheel 4-2 directly over it, centre distance is 5.4mm; The modulus M=0.15 of the modulus M=0.15 of the first acceleration mechanism third wheel 4-1, tooth number Z=60, the second acceleration mechanism third wheel 4-2 wherein, tooth number Z=12; The second acceleration mechanism third wheel 4-2 passes front end end cover 17 movable settings, and its cooperation is
Figure BSA00000206388200043
Clearance fit; The coaxial setting of the second acceleration mechanism third wheel 4-2 of the 3rd acceleration mechanism third wheel 4-3 and its rear end, its cooperation is
Figure BSA00000206388200044
Interference fit; The first counter gear axle 11-1 engagement of the 3rd acceleration mechanism third wheel 4-3 and its below, centre distance is 4.5mm; Wherein, the modulus M=0.15 of the modulus M=0.15 of the 3rd acceleration mechanism third wheel 4-3, tooth number Z=48, the first counter gear axle 11-1, tooth number Z=12; The first acceleration mechanism third wheel 4-1 and second acceleration mechanism third wheel 4-2 composition ratio of gear are that 1: 5 acceleration mechanism, the 3rd acceleration mechanism third wheel 4-3 and first counter gear axle 11-1 composition ratio of gear is 1: 4 acceleration mechanism; Carry out two-stage by gear drive and quicken, make the gear ratio of the central gear 5 and the first counter gear axle 11-1 reach 1: 20;
As Fig. 2 and shown in Figure 4, the Weight and disk type counter comprises the first counter gear axle 11-1, the second counter gear axle 11-2, the 3rd counter gear axle 11-3, four-counter gear shaft 11-4, the 5th counter gear axle 11-5, the first counter gear 12-1, the second counter gear 12-2, the 3rd counter gear 12-3, four-counter gear 12-4, the 5th counter gear 12-5, the 6th counter gear 12-6, the first counter code-disc 13-1, the second counter code-disc 13-2, the 3rd counter code-disc 13-3, four-counter code-disc 13-4, the 5th counter code-disc 13-5, the first counter thumb wheel 14-1, the second counter thumb wheel 14-2, the 3rd counter thumb wheel 14-3 and four-counter thumb wheel 14-4.
The first counter gear axle 11-1 goes up from counter front panel 15 to being coaxially arranged with the first counter code-disc 13-1 and the first counter gear 12-1 between the counter rear panel 16 successively, the second counter gear axle 11-2 goes up from counter front panel 15 to being coaxially arranged with the second counter code-disc 13-2 and the second counter gear 12-2 between the counter rear panel 16 successively, the 3rd counter gear axle 11-3 goes up from counter front panel 15 to being coaxially arranged with the 3rd counter code-disc 13-3 between the counter rear panel 16 successively, the 3rd counter gear 12-3 and four-counter gear 12-4, four-counter gear shaft 11-4 goes up from counter front panel 15 to being coaxially arranged with four-counter code-disc 13-4 and the 5th counter gear 12-5 between the counter rear panel 16 successively, the 5th counter gear axle 11-5 goes up from counter front panel 15 to being coaxially arranged with the 5th counter code-disc 13-5 and the 6th counter gear 12-6 between the counter rear panel 16 successively, all counter gear axle equal altitudes settings; The first counter gear 12-1 is by the first counter thumb wheel 14-1 and second counter gear 12-2 engagement, the second counter gear 12-2 is by the second counter thumb wheel 14-2 and four-counter gear 12-4 engagement, the 3rd counter gear 12-3 is by the 3rd counter thumb wheel 14-3 and the 5th counter gear 12-5 engagement, and the 5th counter gear 12-5 is by four-counter thumb wheel 14-4 and the 6th counter gear 12-6 engagement.
As shown in Figure 4, each thumb wheel is positioned at the below of the contiguous counter gear shaft line of centres, and each thumb wheel all is in sustained height.
The first counter gear axle 11-1 rotates the first counter gear 12-1 and the first counter code-disc 13-1 that drive coaxial setting and rotates; The first counter gear 12-1 revolution moves a week, dial the first counter thumb wheel 14-1 once, the first counter thumb wheel 14-1 stirs the second counter gear 12-2 and rotated for 1/10 week, and the second counter gear 12-2 drives the coaxial second counter gear axle 11-2 and the second counter code-disc 13-2 and rotates; The second counter gear 12-2 revolution moves a week, dial the second counter thumb wheel 14-2 once, the second counter thumb wheel 14-2 stirs the 3rd counter gear 12-3 and rotated for 1/10 week, and the 3rd counter gear 12-3 drives coaxial the 3rd counter gear axle 11-3, the 3rd counter code-disc 13-3 and four-counter gear 12-4 and rotates; Four-counter gear 12-4 revolution moves a week, dial the 3rd counter thumb wheel 14-3 once, the 3rd counter thumb wheel 14-3 stirs the 5th counter gear 12-5 and rotated for 1/10 week, and the 5th counter gear 12-5 drives coaxial the 5th counter gear axle 11-2 and the 5th counter code-disc 13-2 and rotates; The 5th counter gear 12-5 revolution moves a week, dial four-counter thumb wheel 14-4 once, four-counter thumb wheel 14-4 stirs the 6th counter gear 12-6 and rotated for 1/10 week, and the 6th counter gear 12-6 drives coaxial the 6th counter gear axle 11-6 and the 6th counter code-disc 13-6 and rotates; Are indicating numeral 0~9 in the first counter code-disc 13-1, the second counter code-disc 13-2, the 3rd counter code-disc 13-3, four-counter code-disc 13-4 and the 5th counter code-disc 13-5 one week of card, from then on realize counter decimal system counting, and by counting to get tested measurement of length value.

Claims (1)

1. a code wheel reading slide caliper comprises chi body, gear acceleration mechanism and Weight and disk type counter; The chi body comprises blade and chi frame, in the rach slot of blade tooth bar is installed, and the teeth of tooth bar are provided with down; The chi frame is enclosed within on the blade, can produce relative slide displacement along blade, it is characterized in that: be provided with gear acceleration mechanism and Weight and disk type counter in the chi frame;
Described gear acceleration mechanism comprises that the first acceleration mechanism third wheel, the second acceleration mechanism third wheel, the 3rd acceleration mechanism third wheel, central gear, the first slide calliper rule third wheel, the second slide calliper rule third wheel, the 3rd slide calliper rule third wheel, the 4th slide calliper rule third wheel, first slide calliper rule are crossed wheel support, second slide calliper rule are crossed wheel support, first spring and second spring;
Be disposed with first acceleration mechanism third wheel and the central gear on the central axis of rear end cap and cover plate from front to back, the first acceleration mechanism third wheel and the coaxial setting of central gear; The both sides of central gear are symmetrically arranged with the first slide calliper rule third wheel and the second slide calliper rule third wheel; Be disposed with first spring from front to back between the first slide calliper rule third wheel and the 3rd slide calliper rule third wheel and first slide calliper rule are crossed wheel support, the first slide calliper rule third wheel, the 3rd slide calliper rule third wheel, first spring and first slide calliper rule are crossed the coaxial setting of wheel support; The 3rd slide calliper rule third wheel passes cover plate, and it is terminal and rear end cap is movable is provided with;
Be disposed with second spring from front to back between the second slide calliper rule third wheel and the 4th slide calliper rule third wheel and second slide calliper rule are crossed wheel support, the second slide calliper rule third wheel, the 4th slide calliper rule third wheel, second spring and second slide calliper rule are crossed the coaxial setting of wheel support; The 4th slide calliper rule third wheel passes cover plate, and it is terminal and rear end cap is movable is provided with; The 3rd slide calliper rule third wheel and the 4th slide calliper rule third wheel respectively with denticle in tooth bar engagement;
The first acceleration mechanism third wheel and the engagement of the second acceleration mechanism third wheel directly over it, the second acceleration mechanism third wheel passes the movable setting of front end end cover, the coaxial setting of the second acceleration mechanism third wheel of the 3rd acceleration mechanism third wheel and its rear end, the first counter gear axle engagement of the 3rd acceleration mechanism third wheel and its below;
Described Weight and disk type counter comprises the first counter gear axle, the second counter gear axle, the 3rd counter gear axle, the four-counter gear shaft, the 5th counter gear axle, first counter gear, second counter gear, the 3rd counter gear, the four-counter gear, the 5th counter gear, the 6th counter gear, the first counter code-disc, the second counter code-disc, the 3rd counter code-disc, the four-counter code-disc, the 5th counter code-disc, the first counter thumb wheel, the second counter thumb wheel, the 3rd counter thumb wheel and four-counter thumb wheel;
On the first counter gear axle from the counter front panel to being coaxially arranged with the first counter code-disc and first counter gear between the counter rear panel successively, on the second counter gear axle from the counter front panel to being coaxially arranged with the second counter code-disc and second counter gear between the counter rear panel successively, on the 3rd counter gear axle from the counter front panel to being coaxially arranged with the 3rd counter code-disc between the counter rear panel successively, the 3rd counter gear and four-counter gear, be coaxially arranged with four-counter code-disc and the 5th counter gear from the counter front panel successively between the counter rear panel on the four-counter gear shaft, on the 5th counter gear axle from the counter front panel to being coaxially arranged with the 5th counter code-disc and the 6th counter gear between the counter rear panel successively, all counter gear axle equal altitudes are provided with; First counter gear is by the first counter thumb wheel and the engagement of second counter gear, second counter gear is by second counter thumb wheel and the four-counter gearing mesh, the 3rd counter gear is by the 3rd counter thumb wheel and the engagement of the 5th counter gear, the 5th counter gear is by four-counter thumb wheel and the engagement of the 6th counter gear, each thumb wheel is positioned at the below of the contiguous counter gear shaft line of centres, and each thumb wheel all is in sustained height.
CN201020272419XU 2010-07-27 2010-07-27 Code disc reading slide caliper Expired - Fee Related CN201787875U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020272419XU CN201787875U (en) 2010-07-27 2010-07-27 Code disc reading slide caliper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020272419XU CN201787875U (en) 2010-07-27 2010-07-27 Code disc reading slide caliper

Publications (1)

Publication Number Publication Date
CN201787875U true CN201787875U (en) 2011-04-06

Family

ID=43819834

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201020272419XU Expired - Fee Related CN201787875U (en) 2010-07-27 2010-07-27 Code disc reading slide caliper

Country Status (1)

Country Link
CN (1) CN201787875U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110174038A (en) * 2019-06-28 2019-08-27 广州钟颖眼镜有限公司 A kind of ring block radius measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110174038A (en) * 2019-06-28 2019-08-27 广州钟颖眼镜有限公司 A kind of ring block radius measuring device
CN110174038B (en) * 2019-06-28 2020-03-10 温州顺创智能科技有限公司 Annular block radius measuring device

Similar Documents

Publication Publication Date Title
CN201787875U (en) Code disc reading slide caliper
CN101922903B (en) Code wheel reading slide caliper
CN101614562A (en) Pointer type reading device with digitizing function
CN1075632C (en) Speed odometer with synchronous digital speed display and analogue speed pointer
US3974570A (en) Indicator for measuring apparatus
CN203274830U (en) Water meter indicating device with high resolution
CN202319936U (en) Combined instrument device of motorcycle
CN210400509U (en) Counter assembly for metering device
CN2498579Y (en) Graduationless calliper
CN2294451Y (en) Caliper with meter for indicating data in metric and English system
CN209857792U (en) Digital display calliper with analogue pointer
CN2158071Y (en) Digital pointer type scale watch for measuring altitude
CN2140508Y (en) Metric and english system indicator
US3945258A (en) Dial gauge measuring the length in two different units
CN2182386Y (en) Digital micro depthometer wth dial gauge
CN2611871Y (en) Level angle measurer
CN208139984U (en) A kind of digital display type worm screw stroke measuring device
CN2402993Y (en) Double-dial indicator type dial gauge
CN2289202Y (en) Instrument for measuring curve length
CN212539310U (en) Thing networking intelligent gas table magnetic resistance sampling device
CN213985261U (en) Novel counter
CN2189732Y (en) Flexible high-precision ruler of metric british system
CN2298502Y (en) Double-display dialgauge with metric and English system
CN2114148U (en) Means for testing or calibrating water meter using microcomputers
CN209894393U (en) Mechanical digital display pressure gauge

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110406

Termination date: 20170727