Description

This brass compound microscope is supported on a claw-footed base, mounted to a wood platform. Its design is based on The Society of the Arts pattern. The round cross-section limb pivots on trunnions mounted to the stage. The body tube screws into the bar attached to the top of the limb. Coarse focusing is done with a rack and pinion that moves a telescoping triangular cross-section extension of the upper limb. Fine focus is by a thumbwheel near the bottom of the body tube that moves a short inner tube on which the objective mounts. There are two objectives, with brass canisters, and a Huygenian-type two lens eyepiece. The square stage has a separate moveable carrier that is held in on top of the stage with two spring clips. The carrier has a rest and two spring clips for holding slides. There is a substage wheel of three stops and a bull’s eye condenser lens mounted on its own stand. A substage concave mirror mounts on the end of the limb. The only accessories are the extra objective and a live box. One of the objectives is signed, “Bausch & Lomb Optical Co. 1IN.”  The microscope disassembles and fits into its mahogany carrying case.