French monocular brass microscope, the barrel signed T Hartnack & A. Prazmouski, Rue Bonaparte, Paris, circa 1870, rack and pinion coarse and screw fine focussing, black slate table with lens, on rotating stand with plano-convex mirror and Y shaped foot, minimum height 29cm, in a mahogany case with two extra eyepieces, several parts for compond objectives and some slides.