Lathe headstocks in the assembly area. In the foreground, handing from a chain block, is a "cradle", a sub-assembly containing the speed-change gears and a sleeve pinion that drove the main spindle though a multi-tooth clutch. At the second bench the cradle has been bolted into place and the main spindle can be seen partially inserted.

A complete headstock being tested on what was known in the factory as the "run-off block"; this was a device that put the headstock under a working load and allowed the inspector to assess whether any noise or vibration fell within acceptable limits.

Machined gear blanks are checked by an inspector for uniformity of diameter, width of face and bore sizes. Although a micrometer is being used for the benefit of the photographer the "fixed" and "go-no-go" plug gages on the bench would have been the normal tools employed