Brass and Steel Spherical Slide Rest

Description:

Brass and Steel Spherical Slide Rest, with multiple dovetailed sliding beds and plates, the bottom bed with engraved rule marked 0-6 with geared adjustment screw, second bed with engraved rule divided 0-5 and 0-6 with vernier tab, the third and fourth beds with engraved rules 0-5 and 0-40 respectively, both with vernier tabs and fine adjusting knobs, associated aluminum attachment block and screw, and other various attachments and parts, all housed in a custom plywood box.
Estimate $4,000-6,000