US2636273A - Pipe sighting device and contour marker - Google Patents

Pipe sighting device and contour marker Download PDF

Info

Publication number
US2636273A
US2636273A US220625A US22062551A US2636273A US 2636273 A US2636273 A US 2636273A US 220625 A US220625 A US 220625A US 22062551 A US22062551 A US 22062551A US 2636273 A US2636273 A US 2636273A
Authority
US
United States
Prior art keywords
protractor
pipe
tube
sighting
sighting device
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 - Lifetime
Application number
US220625A
Inventor
James H Morris
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 US220625A priority Critical patent/US2636273A/en
Application granted granted Critical
Publication of US2636273A publication Critical patent/US2636273A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00—Marking-out or setting-out work
    • B25H7/005—Marking-out or setting-out work for pipes

Definitions

  • Another object of my invention is to provide a novel pipe sighting device of the character stated, in which rotatable protractor-s are so mounted that both the horizontal and vertical angles, or either of them, can be determined.
  • a feature of my invention is to provide a pipe sighting device of the character stated, in which the amount and direction of misalignment of two pipes can be accurately determined, and also the shape of the cut on these pipes can be accurately and quickly determined by the operator of the device.
  • Another feature of my invention is to provide a device of the character stated, which is simple in construction and which can be easily operated by the user.
  • Figure 1 is a perspective view of my pipe sighting device in position on misaligned pipe.
  • Figure 2 is a perspective view of the tool with the sighting tube removed.
  • Figure 3 is an enlarged framentary side elevation of my pipe sighting device with parts broken away to show interior construction.
  • Figure 4 is a perspective view of the pipe sighting device showing the marker in position.
  • Figure 5 is a sectional view taken on line 5-5 of Figure 3.
  • Figure 6 is a perspective view of the protractor showing the sighting tube arranged to determine the horizontal angle.
  • Figure '7 is a perspective view of a modified form of pipe sighting device.
  • Figure 8 is a fragmentary plan view of the hinged connecting tube of the pipe sighting device.
  • Figure 9 is a fragmentary side elevation of the same.
  • the numeral I indicates my sighting device, which consists of a pair of spaced V-blocks 2 and 3, which are connected by a tube 4, which is fixedly attached to both V-blocks.
  • the V- blocks are so constructed that they will fit on to the top of the pipe to be worked upon, substantially as shown in Figure 1, and will center themselves on the pipe due to the shape of the block.
  • the sighting device may be desirable to attach to a structural shape, and for that purpose I provide a hook 5 in the block 2, and a hook 6 in the block 3. These hooks are slidably mounted in the V-blocks and are held in adjusted position relative to the blocks by a set screw 1.
  • the sightingconstruction consists of a bifurcated head 8, from which a trunnion 9 extends. This trunnion is fixedly secured to the head 8 and fits closely within the tube 4. A set screw I0 is threaded into the tube 4 and bears against the trunnion 9, thus holding the trunnion and the head 8 against movement when the set screw I0 bears against this trunnion.
  • a protractor II is fixedly attached to the head 8 and this protractor bears against the outer face of the V-block 2. The purpose of this protractor will be further described.
  • a second protractor I2 is pivotally mounted in the head 8 on the pin I3. This pin is removable so that the protractor I2 can be removed, as will be further described.
  • the calibrations on the protractor I2 are read through a window I4 in the head 8. It will be evident that the head 8 can be rotated in the tube 4 so that the protractor I2 may be either in a horizontal or a vertical position. This will be subsequently described in the operation of the device.
  • I In the outer face of the protractor I2, I provide a threaded hole I5 which receives a bolt I6 to hold the marking arm IT.
  • This marking arm carries a chalk I8 at its outer end for the purpose of marking the pipe I9 or 20 when the contour marker is in position.
  • I To hold the sighting device I in position on the pipe, I provide a pair of hooks 2
  • a chain 22 (which may also include a spring section) encircles the pipe and is hooked into the hooks 2 I, thus holding the sighting assembly I in position, as shown in Figure 1.
  • a second threaded hole 23 is provided in another face of the protractor I2, as shown, and this threaded hole receives a ring fitting 24 to hold the sighting tube 25, as shown in Figure 3.
  • the ring fitting 24 and the tube 25 are positioned, as shown in Figure 3, when it is desired to determine the vertical angle of misalignment between the pipes l9 and 20.
  • the protractor I2 is vertical and can be rotated around the pin l3 until the tube 25 bears on the target 26, which is mounted on the V-blocks 21-28, and positioned on the pipe section, which is spaced from the sighting assembly i. If the pipes i8 and 29 are merely misaligned in a vertical direction, then the single sighting with the protractor 12 in the position shown in Figures 2 and 3 will be suiiicient.
  • a bubble level 39 can be mounted on one of the V-blocks 2 or 3 for the purpose of levelling these blocks on the pipe and also a bubble 3! may be provided on the protractor 12 for the purpose of levelling this protractor.
  • FIGs 7, 8 and 9 I have shown a slightly modified form of V-block assembly so that the V-blocks can be arranged at an elbow 32 in the pipe.
  • the V-blocks S8--3ii which are identical to the blocks 2 and 3, are connected by hinged tubes 35-36, that is, these tubes are flat at their inner ends and are connected by a pin 31, thus hinging the two tubes so that the V-blocks 33 and 34 can be placed at an angle to each other.
  • the sighting assembly 1 is mounted on a pipe by means of the chain 22.
  • the target 25 is placed on the adjacent misaligned pipe 19.
  • the protractor i2 is turned to a vertical position, the ring fitting 24 is screwed into the protractor l2, and the sight tube 25 is placed in the ring 2d.
  • the set screw I! can be set so that the protractor E?” can move only in a vertical plane.
  • the sight tube 25 can be brought to bear on the target 26. If it is found that it is necessary to also rotate the trunnion 9, this can be done and the amount of rotation read on the protractor ll.
  • the head 8 is turned so that the window I! faces upwardly.
  • the protractor I2 is removed from the head 8 and turned so that the ring fitting 24 projects to the left, as viewed in Figure 6.
  • a second fitting 29 is now inserted in the ring 24 and the tube 25 is placed in this second fitting, as shown in Figure 6.
  • the protractor I 2 is now in horizontal position and can be rotated around the pin l3 until the sight 25 bears on the target 35, at which times the horizontal angle of misalignment is read.
  • a pipe sighting device comprising a pair of spaced V-blocks, a tube connecting the V-blocks and fixedly secured thereto, a head, a trunnion projecting from the head and extending through one of said V-blocks and into said tube, a protractor pivotally mounted on said head, a ring mounted in the edge of the protractor said protractor having a hole in the edge thereof to receive the ring, a sighting tube fitted in said ring whereby the sighting tube is mounted in spaced relation to the protractor.
  • a pipe sighting device comprising a pair of spaced V-bloclzs, a tube connecting the V-blocks and fixedly secured thereto, a head, a trunnion projecting from the head and extending through one of said V-blocks and into said tube, a protractor pivotally mounted on said head, a ring mounted in the edge of the protractor said protractor having a hole in the edge thereof to receive the ring, a sighting tube fitted in said ring whereby the sighting tube is mounted in spaced relation to the protractor, a second protractor fixedly mounted on said head and arranged at right angle to the first named protractor.

Description

April 28, 1953 J. H. MORRIS 2,636,273
PIPE SIGHTING DEVICE AND CONTOUR MARKER Filed April 12. 1951 2 SI-IEETS Sl-IE'ET 1 arm w:
JA/I/A/Z/I/M/rm 4rram z April 28, 1953 J. H. MORRIS 2,636,273
PIPE SIGHTING DEVICE AND CONTOUR MARKER Filed April 12, 1951 2 SHEETS-SHEET 2 Patented Apr. 28, v 1953 OFFICE PIPE SIGHTING DEVICE AND CONTOUR MARKER James H. Morris, Long Beach, Calif.
Application April 12, 1951, Serial No. 220,625
2 Claims. 1
mounted on a section of pipe and which carries a sighting tube so mounted that the appropriate horizontal and vertical angles of misalignment can be quickly and easily determined.
Another object of my invention is to provide a novel pipe sighting device of the character stated, in which rotatable protractor-s are so mounted that both the horizontal and vertical angles, or either of them, can be determined.
A feature of my invention is to provide a pipe sighting device of the character stated, in which the amount and direction of misalignment of two pipes can be accurately determined, and also the shape of the cut on these pipes can be accurately and quickly determined by the operator of the device.
Another feature of my invention is to provide a device of the character stated, which is simple in construction and which can be easily operated by the user.
Other objects, advantages and features of invention may appear from the accompanying drawing, the subioined detailed description and the appended claims."
In the drawing:
Figure 1 is a perspective view of my pipe sighting device in position on misaligned pipe.
Figure 2 is a perspective view of the tool with the sighting tube removed.
Figure 3 is an enlarged framentary side elevation of my pipe sighting device with parts broken away to show interior construction.
Figure 4 is a perspective view of the pipe sighting device showing the marker in position.
Figure 5 is a sectional view taken on line 5-5 of Figure 3.
Figure 6 is a perspective view of the protractor showing the sighting tube arranged to determine the horizontal angle.
Figure '7 is a perspective view of a modified form of pipe sighting device.
Figure 8 is a fragmentary plan view of the hinged connecting tube of the pipe sighting device.
Figure 9 is a fragmentary side elevation of the same.
Referring more particularly to the drawing, the numeral I indicates my sighting device, which consists of a pair of spaced V- blocks 2 and 3, which are connected by a tube 4, which is fixedly attached to both V-blocks. The V- blocks are so constructed that they will fit on to the top of the pipe to be worked upon, substantially as shown in Figure 1, and will center themselves on the pipe due to the shape of the block.
In certain instances, it may be desirable to attach the sighting device to a structural shape, and for that purpose I provide a hook 5 in the block 2, and a hook 6 in the block 3. These hooks are slidably mounted in the V-blocks and are held in adjusted position relative to the blocks by a set screw 1.
The sightingconstruction consists of a bifurcated head 8, from which a trunnion 9 extends. This trunnion is fixedly secured to the head 8 and fits closely within the tube 4. A set screw I0 is threaded into the tube 4 and bears against the trunnion 9, thus holding the trunnion and the head 8 against movement when the set screw I0 bears against this trunnion.
A protractor II is fixedly attached to the head 8 and this protractor bears against the outer face of the V-block 2. The purpose of this protractor will be further described.
A second protractor I2 is pivotally mounted in the head 8 on the pin I3. This pin is removable so that the protractor I2 can be removed, as will be further described. The calibrations on the protractor I2 are read through a window I4 in the head 8. It will be evident that the head 8 can be rotated in the tube 4 so that the protractor I2 may be either in a horizontal or a vertical position. This will be subsequently described in the operation of the device.
In the outer face of the protractor I2, I provide a threaded hole I5 which receives a bolt I6 to hold the marking arm IT. This marking arm carries a chalk I8 at its outer end for the purpose of marking the pipe I9 or 20 when the contour marker is in position.
To hold the sighting device I in position on the pipe, I provide a pair of hooks 2| which project outwardly from the tube 4, and a chain 22 (which may also include a spring section) encircles the pipe and is hooked into the hooks 2 I, thus holding the sighting assembly I in position, as shown in Figure 1.
A second threaded hole 23 is provided in another face of the protractor I2, as shown, and this threaded hole receives a ring fitting 24 to hold the sighting tube 25, as shown in Figure 3.
The ring fitting 24 and the tube 25 are positioned, as shown in Figure 3, when it is desired to determine the vertical angle of misalignment between the pipes l9 and 20. In this position the protractor I2 is vertical and can be rotated around the pin l3 until the tube 25 bears on the target 26, which is mounted on the V-blocks 21-28, and positioned on the pipe section, which is spaced from the sighting assembly i. If the pipes i8 and 29 are merely misaligned in a vertical direction, then the single sighting with the protractor 12 in the position shown in Figures 2 and 3 will be suiiicient. If the pipes 19 and 29 are misaligned both vertically and horizontally then with the window !4 turned upwardly, as shown in Figure 6, the protractor I2 is then set in the head 8 so that the ring fitting 24 is projecting to the left, as shown in Figure 6. A riser 29 is now placed in the fitting 24, as shown in' Figure 6, and the sighting tube 25 fits in this riser, the riser being off set so as to move the tube ,25 substantially to the center line of the tube 4.
By rotating the protractor 52 around its pivot 13 until the sighting tube 25 bears on the target 2.6, it is possible to read the horizontal angle of misalignment.
If desired, a bubble level 39 can be mounted on one of the V- blocks 2 or 3 for the purpose of levelling these blocks on the pipe and also a bubble 3! may be provided on the protractor 12 for the purpose of levelling this protractor.
In Figures 7, 8 and 9 I have shown a slightly modified form of V-block assembly so that the V-blocks can be arranged at an elbow 32 in the pipe. The V-blocks S8--3ii, which are identical to the blocks 2 and 3, are connected by hinged tubes 35-36, that is, these tubes are flat at their inner ends and are connected by a pin 31, thus hinging the two tubes so that the V- blocks 33 and 34 can be placed at an angle to each other.
In operation, the sighting assembly 1 is mounted on a pipe by means of the chain 22. The target 25 is placed on the adjacent misaligned pipe 19. First, the protractor i2 is turned to a vertical position, the ring fitting 24 is screwed into the protractor l2, and the sight tube 25 is placed in the ring 2d. The set screw I!) can be set so that the protractor E?! can move only in a vertical plane. By moving the protractor I2 around its pivot 13, the sight tube 25 can be brought to bear on the target 26. If it is found that it is necessary to also rotate the trunnion 9, this can be done and the amount of rotation read on the protractor ll.
To determine a horizontal angle of misalignment, as well as the previously read vertical angle, the head 8 is turned so that the window I! faces upwardly. The protractor I2 is removed from the head 8 and turned so that the ring fitting 24 projects to the left, as viewed in Figure 6. A second fitting 29 is now inserted in the ring 24 and the tube 25 is placed in this second fitting, as shown in Figure 6. The protractor I 2 is now in horizontal position and can be rotated around the pin l3 until the sight 25 bears on the target 35, at which times the horizontal angle of misalignment is read.
The same procedure of determining misalignment of parts can also be done where these parts are structural shapes instead of pipe. For this purpose the hooks 5 and 6 are provided which fit over the edge of the structural shape.
Having described my invention, I claim:
1. A pipe sighting device comprising a pair of spaced V-blocks, a tube connecting the V-blocks and fixedly secured thereto, a head, a trunnion projecting from the head and extending through one of said V-blocks and into said tube, a protractor pivotally mounted on said head, a ring mounted in the edge of the protractor said protractor having a hole in the edge thereof to receive the ring, a sighting tube fitted in said ring whereby the sighting tube is mounted in spaced relation to the protractor.
2. A pipe sighting device comprising a pair of spaced V-bloclzs, a tube connecting the V-blocks and fixedly secured thereto, a head, a trunnion projecting from the head and extending through one of said V-blocks and into said tube, a protractor pivotally mounted on said head, a ring mounted in the edge of the protractor said protractor having a hole in the edge thereof to receive the ring, a sighting tube fitted in said ring whereby the sighting tube is mounted in spaced relation to the protractor, a second protractor fixedly mounted on said head and arranged at right angle to the first named protractor.
JAMES H. MORRIS.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 362,960 Harild May 1'7, 1887 1,922,409 Wyss Aug. 15, 1933 2,497,933 Devers Feb. 21, 1950 2,569,919 Ridgeway Sept. 25, 1951
US220625A 1951-04-12 1951-04-12 Pipe sighting device and contour marker Expired - Lifetime US2636273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US220625A US2636273A (en) 1951-04-12 1951-04-12 Pipe sighting device and contour marker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US220625A US2636273A (en) 1951-04-12 1951-04-12 Pipe sighting device and contour marker

Publications (1)

Publication Number Publication Date
US2636273A true US2636273A (en) 1953-04-28

Family

ID=22824295

Family Applications (1)

Application Number Title Priority Date Filing Date
US220625A Expired - Lifetime US2636273A (en) 1951-04-12 1951-04-12 Pipe sighting device and contour marker

Country Status (1)

Country Link
US (1) US2636273A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828545A (en) * 1953-06-01 1958-04-01 Spencer C Ely Contour marker
US2883751A (en) * 1956-05-31 1959-04-28 George D Page Bend aligning and angle measuring device for large diameter pipe sections
US2950536A (en) * 1956-11-13 1960-08-30 Hellwig August Method and apparatus for angular measurement of pipe bends
US3038261A (en) * 1956-08-27 1962-06-12 Griffin C Blain Pipe layout apparatus and method
US3130496A (en) * 1960-12-14 1964-04-28 Copeland Roy Dee Angle measuring and cutting device for tubular conduits
US3604121A (en) * 1968-06-07 1971-09-14 Hexcel Corp Roll alignment method and apparatus
US4413415A (en) * 1982-01-26 1983-11-08 Stovall David T Shaft alignment tool
US4553335A (en) * 1984-07-16 1985-11-19 Reliance Electric Company Shaft alignment device
US4580345A (en) * 1984-08-24 1986-04-08 Armco Inc. Laser pipe layout device
US6052911A (en) * 1995-01-22 2000-04-25 Davis; William R. Laser centering apparatus
US6532675B2 (en) * 2001-04-18 2003-03-18 Guy Letourneau Device for measuring the angle of orientation with reference to a known frame of reference between a first object having a first axis and a second remote destination
US20030136955A1 (en) * 2002-01-24 2003-07-24 Platt Robert E. Adjustable fence rail mounting clip
US20050236612A1 (en) * 2002-01-24 2005-10-27 Platt Robert E Mounting system for mounting a rail to a post
US20070251110A1 (en) * 2006-04-26 2007-11-01 Hiebert Ross W Hose Angle Protractor
US20110252656A1 (en) * 2010-04-16 2011-10-20 Double G Coatings Company, L.P. Crowned roll measuring arm
CN102848373A (en) * 2012-09-11 2013-01-02 宜昌市天鸿科技有限责任公司 Equipment and method for one-step forming of obliquely crossing grooves of reducing pipe fittings
US20160243630A1 (en) * 2012-01-31 2016-08-25 Francis Torq/Lite, Inc. Flange bolt cutter
US20170328711A1 (en) * 2016-05-12 2017-11-16 Milwaukee Electric Tool Corporation Level with Rotating Angle Indicator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US362960A (en) * 1887-05-17 haeild
US1922409A (en) * 1932-08-23 1933-08-15 Wyss Roland Torch holder
US2497933A (en) * 1945-12-26 1950-02-21 Charles E Devers Carpenter's transit
US2569019A (en) * 1945-04-21 1951-09-25 Leroy E Ridgeway Contour marker and layout tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US362960A (en) * 1887-05-17 haeild
US1922409A (en) * 1932-08-23 1933-08-15 Wyss Roland Torch holder
US2569019A (en) * 1945-04-21 1951-09-25 Leroy E Ridgeway Contour marker and layout tool
US2497933A (en) * 1945-12-26 1950-02-21 Charles E Devers Carpenter's transit

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828545A (en) * 1953-06-01 1958-04-01 Spencer C Ely Contour marker
US2883751A (en) * 1956-05-31 1959-04-28 George D Page Bend aligning and angle measuring device for large diameter pipe sections
US3038261A (en) * 1956-08-27 1962-06-12 Griffin C Blain Pipe layout apparatus and method
US2950536A (en) * 1956-11-13 1960-08-30 Hellwig August Method and apparatus for angular measurement of pipe bends
US3130496A (en) * 1960-12-14 1964-04-28 Copeland Roy Dee Angle measuring and cutting device for tubular conduits
US3604121A (en) * 1968-06-07 1971-09-14 Hexcel Corp Roll alignment method and apparatus
US4413415A (en) * 1982-01-26 1983-11-08 Stovall David T Shaft alignment tool
US4553335A (en) * 1984-07-16 1985-11-19 Reliance Electric Company Shaft alignment device
US4580345A (en) * 1984-08-24 1986-04-08 Armco Inc. Laser pipe layout device
US6052911A (en) * 1995-01-22 2000-04-25 Davis; William R. Laser centering apparatus
US6532675B2 (en) * 2001-04-18 2003-03-18 Guy Letourneau Device for measuring the angle of orientation with reference to a known frame of reference between a first object having a first axis and a second remote destination
US6986505B2 (en) * 2002-01-24 2006-01-17 Platt Robert E Adjustable fence rail mounting clip
US7374154B2 (en) 2002-01-24 2008-05-20 Platt Robert E Mounting system for mounting a rail to a post
US20050258413A1 (en) * 2002-01-24 2005-11-24 Platt Robert E Clip for adjustably mounting a fence rail to a fence post
US20030136955A1 (en) * 2002-01-24 2003-07-24 Platt Robert E. Adjustable fence rail mounting clip
US7147212B2 (en) 2002-01-24 2006-12-12 Platt Robert E Clip for adjustably mounting a fence rail to a fence post
US20070045603A1 (en) * 2002-01-24 2007-03-01 Platt Robert E Clip for adjustable mounting a fence rail to a fence post
US20050236612A1 (en) * 2002-01-24 2005-10-27 Platt Robert E Mounting system for mounting a rail to a post
US7334779B2 (en) 2002-01-24 2008-02-26 Platt Robert E Clip for adjustable mounting a fence rail to a fence post
US20080111119A1 (en) * 2002-01-24 2008-05-15 Platt Robert E Method of adjustably mounting a fence rail to a fence post
US20070251110A1 (en) * 2006-04-26 2007-11-01 Hiebert Ross W Hose Angle Protractor
US7430812B2 (en) * 2006-04-26 2008-10-07 Austin Distributing & Manufacturing Corporation Hose angle protractor
US20110252656A1 (en) * 2010-04-16 2011-10-20 Double G Coatings Company, L.P. Crowned roll measuring arm
US20160243630A1 (en) * 2012-01-31 2016-08-25 Francis Torq/Lite, Inc. Flange bolt cutter
US9550241B2 (en) * 2012-01-31 2017-01-24 Francis Torq/Lite, Inc. Flange bolt cutter
US20170197261A1 (en) * 2012-01-31 2017-07-13 Francis Torq/Lite, Inc. Flange Bolt Cutter
US9981325B2 (en) * 2012-01-31 2018-05-29 Torq/Lite, Llc Flange bolt cutter
CN102848373A (en) * 2012-09-11 2013-01-02 宜昌市天鸿科技有限责任公司 Equipment and method for one-step forming of obliquely crossing grooves of reducing pipe fittings
CN102848373B (en) * 2012-09-11 2015-04-29 宜昌市天鸿科技有限责任公司 Equipment and method for one-step forming of obliquely crossing grooves of reducing pipe fittings
US20170328711A1 (en) * 2016-05-12 2017-11-16 Milwaukee Electric Tool Corporation Level with Rotating Angle Indicator
US10422638B2 (en) * 2016-05-12 2019-09-24 Milwaukee Electric Tool Corporation Level with rotating angle indicator

Similar Documents

Publication Publication Date Title
US2636273A (en) Pipe sighting device and contour marker
US1991117A (en) Marking or scribing device
US3823482A (en) Inspection machine having right angle probe units
US4483059A (en) Clamping and spacing tool
US2198836A (en) Surveying apparatus
US2824381A (en) Pre-indicator of pipe positions and bends
US2607126A (en) Pipe layout gauge
US2311234A (en) Cutting and gauging instrument
US2710454A (en) Multiple jig tool
US2384071A (en) Instrument for locating and spacing bored holes
US2615255A (en) Delineator for determining the length and end form of connecting pipes
US2389286A (en) Apparatus for marking or cutting pipes
US2624944A (en) Layout measuring tool
US2497853A (en) Apparatus for projecting circular markings upon nonplanar surfaces
US2691829A (en) Land level
US4206548A (en) Measuring tool for taper bores
US2285281A (en) Apparatus for surveying articles of manufacture
DE545026C (en) Marking device for cone penetrations
US2132407A (en) Pitchomexer
US4277894A (en) Pipe joint intersection contour scriber
US3324557A (en) Optical plumbing device
US2972816A (en) Aligning and leveling device
US2436096A (en) Apparatus for testing the static balance of propeller blades
US1770224A (en) Borehole directional apparatus and method of orientation
US2835981A (en) Pipe-marking device