
Title
A microfilter: filar position-Micrometre, the type in general use in the late 19th century
Caption
Engraving depicting a microfilter: filar position-Micrometre, the type in general use in the late 19th century. Dated 19th Century
Date
19th century
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP23A16_144
License type
Rights managed
Available size
60,0Mb (2,7Mb) / 14,0in x 16,7in / 4192 x 5003 (300dpi)