Bausch & Lomb jug handle laboratory microscope serial no. 72324 dating from c1909. Rack & pinion coarse focus & screw & lever fine focus. Triple rotating nosepiece and three objectives, all by Spencer Lens Co (16mm no 75652, 10x numerical aperture 0.25, 4mm no 79228, 44x na 0.7, and 1.8mm oil immersion no 73970, 95x na 1.3) with cases. Sub-stage with screw mounted Abbe condenser, and adjustable diaphragm. The sub-stage mirror is plano-convex. There are three, unsigned, 23mm diameter, eye-pieces, one with micrometer. The stage is oxidised and the stand is japanned black The draw tube is graduated for different objectives from 140 to 170 mm approximately.
It has a fitted mahogany case.