GB190506166A - An Improved Centre-marking Apparatus for use with Plumbing Instruments - Google Patents

An Improved Centre-marking Apparatus for use with Plumbing Instruments

Info

Publication number
GB190506166A
GB190506166A GB190506166DA GB190506166A GB 190506166 A GB190506166 A GB 190506166A GB 190506166D A GB190506166D A GB 190506166DA GB 190506166 A GB190506166 A GB 190506166A
Authority
GB
United Kingdom
Prior art keywords
plumbing
instruments
centre
marking apparatus
ground
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
Application number
Inventor
Henry Thomas Tallack
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
Application granted granted Critical
Publication of GB190506166A publication Critical patent/GB190506166A/en
Expired legal-status Critical Current

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  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

6166. Tallack, H. T. March 23. Plumbing-instruments; surveying- instruments.-A device for marking on the ground, or on a post or plate let into the ground, a point which is exactly beneath a position plumbed by a plumb bob, nadir telescope, or other instrument comprises a rigid base A, with levelling screws B and levels C, C', and sliding frames D, E, the inner one E carrying the socket H of a spring centre punch I. To mark the position, the frames D, E are adjusted by screws F, G, until the centre of cross-lines on the top of the punch is beneath the plumbbob or in the line of collimation of an opticil plumbing-instrument.
GB190506166D 1905-03-23 1905-03-23 An Improved Centre-marking Apparatus for use with Plumbing Instruments Expired GB190506166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190506166T 1905-03-23

Publications (1)

Publication Number Publication Date
GB190506166A true GB190506166A (en) 1905-12-21

Family

ID=32629392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190506166D Expired GB190506166A (en) 1905-03-23 1905-03-23 An Improved Centre-marking Apparatus for use with Plumbing Instruments

Country Status (1)

Country Link
GB (1) GB190506166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621416A (en) * 1947-04-16 1952-12-16 Perfect Circle Corp Cylinder bore contour gauge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621416A (en) * 1947-04-16 1952-12-16 Perfect Circle Corp Cylinder bore contour gauge

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