A Large Brass Compound Microscope

English, c.1870, unsigned but with objective engraved 'J How 2 Foster Lane London', Microscope on large Y shaped foot with tall uprights supporting microscope on trunnions, with plano-concave mirror substage collar, mechanical stage, rack and pinion focus, with objectives and later eyepieces and many other accessories including a large table bullseye condenser, case height 47cm