Bird's brass standard scale

Made:
1750 in London
maker:
John Bird

Bird's brass standard scale, made about the year 1750, engraved "Royal Society 42", 92 7/ 16"x17/32"x9/32". Divided in inches and tenths from -1 to 90, from 10 to -0.1, a scale is divided in 100 parts. Rest on mahogany bed with cover the whole in wood case

Details

Category:
Weighing & Measuring
Object Number:
1900-165
Materials:
mahogany (wood), wood (unidentified) and brass (copper, zinc alloy)
type:
linear measure standard
credit:
The Royal Society