Fine example of big brass microscope signed Carl ZEISS Jena with serial number 183452 from 1912. The microscope comes in a wonderful fitted oak case, complete with four eyepiece lens, and three objective lens and a key. The microscope tilts, has a rack and pinion main focus and additional fine focus. It has a round brass stage with a manually adjustable slide rest. Below the stage is a large adjustable mirror. Excellent condition for the age. Dimensions of the case 14 inches x 10 inches x 8 inches. Total weight is 20 LB.