Episode of Series “Basic Engineering”
The process of drilling and countersinking a hole is demonstrated also the cutting of the thread by means of a set of three taps; lubrication is emphasised, and various kinds of tap wrench are shown. Dies of various kinds, and their uses, are demonstrated, as also are parallel, spiral, tapered, and expanding reamers.
How to watch
In ACMI's collection
Black and White
16mm film; Access Print (Section 1)