2 9 c m
40cm
actual image size: 32cm x 21cm
Description
Screw-thread correcting lathe, Mk II made by Glenfield and Kennedy for Bryant & Simmons. Before the introduction of thread-grinding, machines like this were important in the manufacture of precision screws for screwing tackle and micrometer measuring machines
Image Details
Image Ref.
10274844
© Science Museum / Science & Society Picture Library