CN103542789B - A kind of width of irregular shaped steel or height tolerance measurement mechanism - Google Patents
A kind of width of irregular shaped steel or height tolerance measurement mechanism Download PDFInfo
- Publication number
- CN103542789B CN103542789B CN201310456175.9A CN201310456175A CN103542789B CN 103542789 B CN103542789 B CN 103542789B CN 201310456175 A CN201310456175 A CN 201310456175A CN 103542789 B CN103542789 B CN 103542789B
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- vernier
- medial surface
- reading
- width
- 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.)
- Active
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A kind of width of irregular shaped steel or height tolerance measurement mechanism, comprise and measure main body and vernier, the one end, downside measuring main body arranges fixation measuring pawl, the other end arranges reading measuring claw, medial surface and the measurement body normal of fixation measuring pawl, the angle in reading measuring claw medial surface and body normal direction is θ, reading measuring claw medial surface is carved with scale, reference mark maximal value is the plus tolerance of tested shaped steel, minimum value is the minus tolerance of tested shaped steel, the inner side of reading measuring claw is provided with the vernier that can slide along medial surface, the lateral surface of vernier is parallel to the medial surface of reading measuring claw, the medial surface of vernier and body normal, when the index line of vernier points to reading measuring claw 0 graduation position, the medial surface of fixation measuring pawl equals nominal width or the height of tested shaped steel to the distance of the medial surface of vernier.
Description
Technical field
The present invention relates to the measurement of dimension of object, particularly the width of irregular shaped steel or the measurement mechanism of height tolerance.
Background technology
Dimension measurement tool is of a great variety, and during iron and steel is produced, consider high temperature, wear-resisting and accuracy requirement, the dimensional measurement of shaped steel adopts vernier caliper usually.The object that steel section size is measured is contrasted measurement result and nominal size, judges whether steel section size reaches standard-required according to the tolerance that standard allows.If size, in standard specialized range, records measurement result, if size exceeds standard specialized range, be judged to be waste product.
For the shaped steel of regular shape, as H profile steel, channel-section steel, angle steel, joist steel etc., employing vernier caliper measurement is convenient and swift, and can higher measuring accuracy be ensured, this is because the medial surface of vernier caliper measuring jaw is parallel to each other, when the distance of measurement two parallel surfaces, when making to be close to measuring surface inside measuring claw, measurement result accurately can be obtained, see Fig. 1.
If object being measured two ends are not parallel planes, when having plane in the width direction, the blade of slide calliper rule can be made to compress this plane and to measure, also can obtain measurement result accurately.
But for shaped steel in irregular shape, because shaped steel two ends are without parallel plane, though and go up plane in the width direction, but vernier caliper blade cannot be made to lean on because plane has projection, can only measure roughly in the width direction during measurement, certain angle a(can be there is and see Fig. 2 in vernier caliper blade and Width), make measured value be greater than actual value and cause result distortion.
202141405U discloses a kind of vernier caliper measuring out-of-shape object length.This vernier caliper comprises with the measurer main body of main scale and the slide block with secondary chi; Described measurer main body is provided with a groove, and this groove is parallel with described main scale; Described secondary chi is connected with described slide block through link, and described link is arranged in the groove of described measurer main body.This utility model is only confined to the length of the uneven object of measured surface.
102927879A discloses a kind of pick-up unit for detecting irregular structure regional area planform tolerance, the detection faces of the detection block of this device simulates the structure profile that will detect completely, and the tolerance values required by the structure profile that will detect makes logical only structure.When the go side detecting block can pass through detected structure profile smoothly, and when not-go-end can stop detection block to pass through, then the detection profile of this structure is qualified, otherwise is defective.This pick-up unit will make according to regional area planform the detection faces detecting block, and therefore complicated structure, cost is higher.
Summary of the invention
In order to solve the accurate measurement problem to irregular shaped steel, overcome the defect that above-mentioned measurement mechanism exists, the actual needs that the present invention measures from shaped steel, adopts the measuring principle different from vernier caliper, provides a kind of width or height tolerance measurement mechanism of irregular shaped steel.
Width or the height tolerance measurement mechanism of irregular shaped steel of the present invention comprise: measure main body and vernier, the one end, downside measuring main body arranges fixation measuring pawl, the other end arranges reading measuring claw, medial surface and the measurement body normal of fixation measuring pawl, reading measuring claw medial surface is θ with the angle in measurement body normal direction, reading measuring claw medial surface is carved with scale, the inner side of reading measuring claw is provided with the vernier that can slide along medial surface, the lateral surface of vernier is parallel to the medial surface of reading measuring claw, medial surface and the measurement body normal of vernier, vernier is carved with one perpendicular to the index line of lateral surface, when the index line of vernier points to 0 graduation position of reading measuring claw, the medial surface of fixation measuring pawl equals the nominal width of tested shaped steel to the distance of the medial surface of vernier.
Locating detent is set between fixation measuring pawl and reading measuring claw, locating detent and measurement body normal.
Improve as one, locating detent is two, and the lower surface of two locating detents in the same horizontal line, and the length of locating detent is less than the length of fixation measuring pawl.
Improve as one, measure in main body and handle is set, grip when being convenient to measure and measure main body.
The reference mark maximal value of above-mentioned reading measuring claw is the plus tolerance of tested shaped steel, and minimum value is the minus tolerance of tested shaped steel.
Reading measuring claw medial surface and angle 2.866 ° ≦ θ≤30 ° measuring body normal direction.
Measuring principle: the lateral surface due to vernier is parallel to the medial surface of reading measuring claw, when vernier is along reading measuring claw medial movement, the angle of moving direction and vertical direction is also θ, so, theoretically, when vernier is along reading measuring claw medial movement 1mm, then displacement is that 1 × sin θ mm is (see Fig. 4 in the horizontal direction, because: a=c × sin θ), the spacing of two scale marks of reading measuring claw is 1mm, and corresponding measuring accuracy (or reading change) is sin θ mm.Suppose that tested shaped steel nominal width is L, standard of tolerance is ± x, when vernier caliper points to 0 graduation position of reading measuring claw, the medial surface of vernier and the spacing of fixation measuring pawl are set as L, mark minimum scale is-x, mark maximum scale is+x, reading measuring claw minimum mark scale and maximum mark scale actual range are set as 2 × x/sin θ, distance between minimum mark scale and maximum mark scale is set as 2 × x/sin θ equal portions, actual range then between adjacent scale is 1mm, and corresponding measuring accuracy (or the change of adjacent scale reading) is sin θ.According to the needs of measuring accuracy, angle theta is less, and the measuring accuracy obtained is higher.
The using method of this device: during measurement, holds handle for one, and another hand, by the foot of vernier slide to reading measuring claw, makes its measured value reach maximum.Measurement mechanism of the present invention is stuck in tested shaped steel width or short transverse, makes locating detent contact the plane of edge, tested shaped steel one end height or Width.Adjust device of the present invention, make the lateral ends being close to tested shaped steel inside fixation measuring pawl.Another hand moving cursor, makes the other end (as Fig. 5) being close to tested shaped steel inside vernier.The position of the index line indication on vernier in the meter full scale of reading measuring claw, then represents that tested shaped steel is qualified, and the scale that the index line on vernier is corresponding is the deviate of tested shaped steel, and the developed width of tested shaped steel is nominal width and deviate sum.As index line pointed location exceeds meter full scale, then represent that tested steel section size is defective.
The invention has the beneficial effects as follows:
(1) because direction of measurement and tested shaped steel width or short transverse cannot the measuring error that cause of perfect parallelism when avoiding existing vernier caliper measurement, improve measuring accuracy.
(2) can Quick Measurement be accomplished and judge shaped steel width or height dimension whether qualified.
Accompanying drawing explanation
The shaped steel schematic diagram of the existing vernier caliper measurement regular shape of Fig. 1;
The existing vernier caliper measurement of Fig. 2 shaped steel schematic diagram in irregular shape;
Fig. 3 structural representation of the present invention;
Fig. 4 vernier schematic diagram of the present invention;
Fig. 5 is using state figure of the present invention.
1, handle 2, measurement main body 3, reading measuring claw 4, vernier 5, left locating detent 6, right locating detent 7, fixation measuring pawl.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but be not limited thereto.
[embodiment 1]
The width of irregular shaped steel or height tolerance measurement mechanism, comprise: measure main body 2 and vernier 4, the one end, downside measuring main body 2 arranges fixation measuring pawl 7, the other end arranges reading measuring claw 3, the medial surface of fixation measuring pawl 7 is vertical with measurement main body 2, reading measuring claw 3 medial surface is θ with the angle of measurement main body 2 vertical direction, reading measuring claw 3 medial surface is carved with scale, the inner side of reading measuring claw 3 is provided with the vernier 4 that can slide along medial surface, the lateral surface of vernier 4 is parallel to the medial surface of reading measuring claw 3, the medial surface of vernier 4 is vertical with measurement main body 2, vernier 4 is carved with one perpendicular to the index line of lateral surface, the scale value of reading measuring claw is indicated during for measuring.
When carrying out actual measurement, as long as the width of tested shaped steel does not make vernier 4 exceed the maximum of reading measuring claw 3 or minimum scale, then tested shaped steel is all qualified.
The width of the irregular shaped steel of the present embodiment or the handle 1 of height tolerance measurement mechanism are positioned at the upside measuring main body 2, locating detent 5,6 is between reading measuring claw 3 and fixation measuring pawl 7, perpendicular to measurement main body 2, and be connected with measurement main body 2, the lower surface height of locating detent 5,6 is identical and in same level, the length of locating detent is less than the length of fixation measuring pawl.
The plane contact in the width direction of respective lower surface and tested shaped steel when locating detent 5,6 lateral attitude should ensure to measure, and should with the projection contacts in plane.
The width of the irregular shaped steel of the present embodiment or height tolerance measurement mechanism are for measuring the shaped steel that nominal width is 200mm, and standard of tolerance is ± 1mm.Reading measuring claw 3 medial surface and angle theta=5.74 ° measuring main body 2 vertical direction of the measurement mechanism of the present embodiment, when the index line of vernier 4 points to 0 graduation position of reading measuring claw, the medial surface of fixation measuring pawl 7 equals 200mm to the distance of the medial surface of vernier 4, when vernier is along reading measuring claw medial movement 1mm, then displacement is 1 × sin5.74 °=0.1mm in the horizontal direction.The minimum mark scale of reading measuring claw 3 is-1mm, maximum mark scale is+1mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 × 1/sin5.74 °=20mm, 2 × 1/sin5.74 °=20 equal portions are divided between the minimum and maximum mark scale value of reading measuring claw 3, actual range between adjacent scale is 1mm, then measuring accuracy (or the change of adjacent scale reading) is 1 × sin5.74 °=0.1mm.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line of vernier 4 points to forward the 3rd article of scale mark position of reading measuring claw 3, and therefore this shaped steel is qualified.
The developed width of this shaped steel is 200+3 × 0.1=200.3(mm).
[embodiment 2]
With being distinguished as of embodiment 1: measuring nominal width is 250mm, and standard of tolerance is ± shaped steel of 2mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=11.54 °, the minimum mark scale of reading measuring claw 3 is-2mm, maximum mark scale is+2mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 × 2/sin11.54 °=20mm, 2 × 2/sin11.54 °=20 equal portions are divided between the maximum and minimum mark scale value of reading measuring claw 3, actual range between adjacent scale is 1mm, then measuring accuracy (or the change of adjacent scale reading) is 1 × sin11.54 °=0.2mm.When the index line of vernier 4 points to 0 graduation position of reading measuring claw, the medial surface of fixation measuring pawl 7 equals 250mm to the distance of the medial surface of vernier 4.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line of vernier 4 points to negative sense the 6th article of scale mark position of reading measuring claw 3, and therefore this shaped steel is qualified.
The developed width of this shaped steel is 250-6 × 0.2=248.8(mm).
[embodiment 3]
With being distinguished as of embodiment 1: measuring height is 250mm, and standard of tolerance is ± shaped steel of 3mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=11.54 °, the minimum mark scale of reading measuring claw 3 is-3mm, maximum mark scale is+3mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 × 3/sin11.54 °=30mm, 2 × 3/sin11.54 °=30 equal portions are divided between the maximum and minimum mark scale value of reading measuring claw 3, actual range between adjacent scale is 1mm, then measuring accuracy (or the change of adjacent scale reading) is 1 × sin11.54 °=0.2mm.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line of vernier 4 points to forward the 4th article of scale mark position of reading measuring claw 3, and therefore this shaped steel is qualified.
The true altitude of this shaped steel is 250+4 × 0.2=250.8(mm).
[embodiment 4]
With being distinguished as of embodiment 1: measuring height is 200mm, and standard of tolerance is ± shaped steel of 1mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=2.866 °, the minimum mark scale of reading measuring claw 3 is-1mm, maximum mark scale is+1mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 × 1/sin2.866 °=40mm, 2 × 1/sin2.866 °=40 equal portions are divided between the maximum and minimum mark scale value of reading measuring claw 3, actual range between adjacent scale is 1mm, then measuring accuracy (or the change of adjacent scale reading) is 1 × sin2.866 °=0.05mm.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line of vernier 4 points to forward the 3rd article of scale mark position of reading measuring claw 3, and therefore this shaped steel is qualified.
The true altitude of this shaped steel is 200+3 × 0.05=200.15(mm).
[embodiment 5]
With being distinguished as of embodiment 1: measuring height is 200mm, and standard of tolerance is ± shaped steel of 5mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=30 °, the minimum mark scale of reading measuring claw 3 is-5mm, maximum mark scale is+5mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 × 5/sin30 °=20mm, 2 × 5/sin30 °=20 equal portions are divided between the maximum and minimum mark scale value of reading measuring claw 3, actual range between adjacent scale is 1mm, then measuring accuracy (or the change of adjacent scale reading) is 1 × sin30 °=0.5mm.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line of vernier 4 points to forward the 5th article of scale mark position of reading measuring claw 3, and therefore this shaped steel is qualified.
The true altitude of this shaped steel is 200+5 × 0.5=202.5(mm).
[embodiment 6]
With being distinguished as of embodiment 1: measuring height is the shaped steel of 200mm, and standard of tolerance is ± 1mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=5.74 °, and the maximum and minimum mark scale of reading measuring claw 3 is ± 1mmm, equals standard allowable tolerance.Reading measuring claw minimum mark scale and maximum mark scale actual range be 2 × 1/sin5.74 °=20mm reading measuring claw 3 maximum and minimum mark scale value between be divided into 20 equal portions, then the numerical value between adjacent two scales is 1 × sin5.74 °=0.1mm.
In the present embodiment, fixation measuring pawl 7 medial surface is close to the lateral ends of tested shaped steel, then moving cursor 4, makes the other end being close to tested shaped steel inside vernier 4, at this moment the index line sensing position of vernier 4 is positioned at outside reading measuring claw meter full scale, and therefore this shaped steel is defective.
Above the width of irregular shaped steel or height tolerance measurement mechanism select wear-resisting, hardness is large, the on-deformable tool steel of high temperature makes.
Claims (8)
1. the width of an irregular shaped steel or height tolerance measurement mechanism comprise: measure main body (2) and vernier (4), it is characterized in that: the one end, downside measuring main body (2) arranges fixation measuring pawl (7), the other end arranges reading measuring claw (3), the medial surface of fixation measuring pawl (7) is vertical with measurement main body (2), reading measuring claw (3) medial surface is θ with the angle of measurement main body (2) vertical direction, reading measuring claw (3) medial surface is carved with scale, the inner side of reading measuring claw (3) is provided with the vernier (4) that can slide along medial surface, the lateral surface of vernier (4) is parallel to the medial surface of reading measuring claw (3), the medial surface of vernier (4) is vertical with measurement main body (2), vernier (4) is carved with one perpendicular to the index line of lateral surface, when the index line of vernier (4) points to 0 graduation position of reading measuring claw (3), the medial surface of fixation measuring pawl (7) equals nominal width or the height of tested shaped steel to the distance of the medial surface of vernier (4).
2. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, it is characterized in that: the reference mark maximal value of reading measuring claw is the plus tolerance of tested shaped steel, reference mark minimum value is the minus tolerance of tested shaped steel.
3. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, it is characterized in that: between fixation measuring pawl (7) and reading measuring claw (3), locating detent (5 is set, 6), locating detent (5,6) is vertical with measurement main body (2).
4. the width of irregular shaped steel according to claim 3 or height tolerance measurement mechanism, it is characterized in that: locating detent (5,6) is two, and the lower surface of two locating detents (5,6) in the same horizontal line.
5. the width of irregular shaped steel according to claim 4 or height tolerance measurement mechanism, is characterized in that: the length of locating detent (5,6) is less than the length of fixation measuring pawl (7).
6. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, is characterized in that: measure in main body (2) and arrange handle (1).
7. the width of irregular shaped steel according to any one of claim 1 to 6 or height tolerance measurement mechanism, is characterized in that: reading measuring claw (3) medial surface and angle 2.866 °≤θ≤30 ° measuring main body (2) vertical direction.
8. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, is characterized in that: width or the height tolerance measurement mechanism of irregular shaped steel are made up of tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456175.9A CN103542789B (en) | 2013-09-29 | 2013-09-29 | A kind of width of irregular shaped steel or height tolerance measurement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456175.9A CN103542789B (en) | 2013-09-29 | 2013-09-29 | A kind of width of irregular shaped steel or height tolerance measurement mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542789A CN103542789A (en) | 2014-01-29 |
| CN103542789B true CN103542789B (en) | 2015-12-30 |
Family
ID=49966486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310456175.9A Active CN103542789B (en) | 2013-09-29 | 2013-09-29 | A kind of width of irregular shaped steel or height tolerance measurement mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103542789B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123740B (en) * | 2016-08-26 | 2020-01-07 | 山东钢铁股份有限公司 | Tool and method for measuring specific height and inner width of forklift gantry channel steel |
| CN112781465B (en) * | 2021-02-02 | 2022-07-26 | 中国十七冶集团有限公司 | Portable beam width and beam height measuring tool and using method |
| CN113776406A (en) * | 2021-09-10 | 2021-12-10 | 东风汽车底盘系统有限公司 | Numerical rim width and wheel flange height combined checking fixture |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3726542A1 (en) * | 1987-08-10 | 1989-03-02 | Frank Weiss | Measuring device (auto-adaptable thickness measuring system) |
| FR2663732A2 (en) * | 1989-11-07 | 1991-12-27 | Godefroy Denis | Apparatus for measuring the developed width of the ungual tuberosity (plate) |
| CN201828222U (en) * | 2010-10-09 | 2011-05-11 | 高金宏 | Abrasion detector for frog wing rail |
| CN202329486U (en) * | 2011-12-06 | 2012-07-11 | 宜宾北方川安化工有限公司 | Device for measuring length of cylinder workpiece with special end faces |
| CN202853515U (en) * | 2012-10-17 | 2013-04-03 | 武汉钢铁(集团)公司 | Vernier caliper used for measuring lock port dimensions of U-shaped steel sheet pile |
| CN203534375U (en) * | 2013-09-29 | 2014-04-09 | 莱芜钢铁集团有限公司 | Measuring device for width or height tolerance of irregular profile steel |
-
2013
- 2013-09-29 CN CN201310456175.9A patent/CN103542789B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3726542A1 (en) * | 1987-08-10 | 1989-03-02 | Frank Weiss | Measuring device (auto-adaptable thickness measuring system) |
| FR2663732A2 (en) * | 1989-11-07 | 1991-12-27 | Godefroy Denis | Apparatus for measuring the developed width of the ungual tuberosity (plate) |
| CN201828222U (en) * | 2010-10-09 | 2011-05-11 | 高金宏 | Abrasion detector for frog wing rail |
| CN202329486U (en) * | 2011-12-06 | 2012-07-11 | 宜宾北方川安化工有限公司 | Device for measuring length of cylinder workpiece with special end faces |
| CN202853515U (en) * | 2012-10-17 | 2013-04-03 | 武汉钢铁(集团)公司 | Vernier caliper used for measuring lock port dimensions of U-shaped steel sheet pile |
| CN203534375U (en) * | 2013-09-29 | 2014-04-09 | 莱芜钢铁集团有限公司 | Measuring device for width or height tolerance of irregular profile steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103542789A (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204346328U (en) | A kind of cubing of detection axis class part length | |
| CN203704847U (en) | Cambered workpiece detection device | |
| CN210486706U (en) | Measuring tool convenient for determining measuring reference in length measurement | |
| CN103542789B (en) | A kind of width of irregular shaped steel or height tolerance measurement mechanism | |
| CN201126350Y (en) | Apparatus for measuring parallel of large-width high-accurate guideway | |
| CN204100983U (en) | Cubing and based on its workpiece Pingdu detection components | |
| CN206573027U (en) | A kind of slide measure in measurable irregular face | |
| CN202177357U (en) | Tool for detecting center distance between inner chain plate and outer chain plate | |
| CN203274632U (en) | A portable length detecting apparatus of shaft parts | |
| CN203534375U (en) | Measuring device for width or height tolerance of irregular profile steel | |
| CN105627891A (en) | Crankshaft key groove symmetry degree detection device | |
| CN205785042U (en) | Survey flatness frock | |
| CN203869602U (en) | Vernier caliper for measuring steel rail offset distance | |
| CN208476101U (en) | High-precision stamping parts Simple checking device | |
| CN202057316U (en) | Special measuring instrument for detecting double-swallow tail type dimensions | |
| CN208833133U (en) | A kind of precision gear processing detection device | |
| CN103940311A (en) | Vernier caliper for dimension measurement of rail profile | |
| CN203837607U (en) | Vernier caliper for detecting section dimension | |
| CN103063102A (en) | Large bearing gear common normal measuring meter | |
| CN211291236U (en) | Pipe crossbeam inclination cutting and chipless hot melting tapping gauge | |
| CN204924139U (en) | Detect device of cutting plane | |
| CN106052500A (en) | Complex recessed surface inner cavity depth measuring ruler | |
| CN104374293A (en) | Seal shape deviation measuring instrument for pressure vessels | |
| CN201569390U (en) | Device for measuring molded line chord width of blade | |
| CN216845934U (en) | Sliding workbench capable of being rapidly calibrated |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |