A Watson Petrological Edinburgh Microscope

English, c.1910, engraved to the back of the tripod stand 'WATSON & SONS Ltd, Depot 2 Easy Row Birmingham' and to the side of the foot 'GEOL. BIRM. UNIV. II' for Geology Birmingham University, also engraved 'G.D.B.U.II' to the objective, and polariser, the microscope on typical Edinburgh tripod stand, brass trunnions support the body with the plano-concave mirror in gimbal on a sliding collar, polariser with Nicol prism, engraved scale with pointer, with clip-on condenser lens on focusing substage collar, goniometer stage with engraved scale around circumference with vernier to rear, body tube with slide in/out polariser, slide in /out Bertrand lens on internal collar, eyepiece with cross hairs, height 41cm