Carriage assembly Atlas 6-inch Mk. 2. The small micrometer dial allowed the cross slide to pass over the top of it. Unfortunately the gib strips were made of hard plastic and the whole of the compound assembly is improved by having a set of steel ones made.

Rear of the compound slide showing evidence of cost cutting: the cross slide was of the "short" type - which wore just the central portion of its ways - and an adjustable gib strip was fitted at the back of the saddle. This had become an old-fashioned method of adjusting the saddle to the bed in the 1920s and, although more complicated to engineer, the strip should have been placed at the front, so leaving a "solid" rear face to take cutting thrust directly against the bed.