The Ames Compound Slide Rest, a substantial affair which weighed 16 lbs, had finely made feed screws of 0.354" diameter, with milled threads of square form running though bronze nuts.
The top slide could be swivelled through 50 degrees either size of zero and the 45/8" diameter base was clamped by two screws engaging with a circular T slot in the 3.75"-travel cross slide.
Whilst the top slide has the usual generous amount of travel for this type of lathe (5.5"), the cross slide was limited to just 3.75"

A special compound slide rest with a lever-action top slide and designed for delicate work where sensitivity of feel over a limited tool travel was required. The slide is shown in action below.

Traverse-spindle Grinding Attachment, so called because the spindle (being held in the hand) was free to slide in its bearings. An overhead pulley drove the spindle and the rope drive, twisted in this case to reverse its direction of rotation, can be seen wrapped round a pulley in the middle of the shaft. In the illustration above a small hole is being finished in the end of a hardened rod with a diamond lap - the spindle being run at between 10,000 and 12,000 rpm.