Birds scale

Made:
1745-1776 in London
maker:
John Bird

Birds scale, in mahogany case, engraved J. Bird, London. 27" long, divided in inches and tenths, reads by vernier to 1/1000 in, scale numbered to read from 25 to 50. Fine adjustment to slide.

Details

Category:
Weighing & Measuring
Object Number:
1900-169
Materials:
brass (copper, zinc alloy) and mahogany (wood)
type:
linear measure standard
credit:
Dr.W.T. Radford

Parts

Birds scale, engraved J. Bird, London. 27" long, divided in inches and tenths, reads by vernier to 1/1000 in, scale numbered to read from 25 to 50. Fine adjustment to slide.

Birds scale

Birds scale, engraved J. Bird, London. 27" long, divided in inches and tenths, reads by vernier to 1/1000 in, scale numbered to read from 25 to 50. Fine adjustment to slide.

Materials:
complete , brass (copper, zinc alloy) and mahogany (wood)
Object Number:
1900-169 Pt1
type:
linear measure standard
Mahogany case, for Birds scale

Mahogany case, for Birds scale

Mahogany case for Birds scale, engraved J. Bird, London. 27-inch long, divided in inches and tenths, reads by vernier to 1/1000 in, scale numbered to read from 25 to 50. Fine adjustment to slide.

Materials:
complete , brass (copper, zinc alloy) and mahogany (wood)
Object Number:
1900-169 Pt2
type:
instrument case
Image ©
The Board of Trustees of the Science Museum

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