
Title
A micrometre
Caption
Engraving depicting a micrometre, a gauge which measures small distances or thicknesses between its two faces, one of which can be moved away from or towards the other by turning a screw with a fine thread. Dated 18th Century
Date
18th century
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP23A16_121
License type
Rights managed
Available size
60,0Mb (902,4Kb) / 26,2in x 8,9in / 7864 x 2667 (300dpi)