18:23

Verniers

19:02

Machine Shop Bench Work - Working With Taps and Dies

30:26

Naval Engineering - What happens when a shell hits a battleship?

7:42

I wish i’d known this sooner, How to use calipers like a pro

19:54

The HIDDEN Screws of PRECISION

15:27

The Micrometer

26:44

Colchester Lathe Company

41:56

National Museum of Industrial History, Bethlehem, Pennsylvania