c.1885, French, signed to foot 'C. Verick elive specialde E Hartnack rue de la Parcheminerie 2 Paris', standing on heavy lead-filled base with a supporting column at rear with compass-type joint below the stage, plano-concave mirror held in gimbal in sliding dovetail, polariser in slide in/out substage assembly and fully rotating stage with engraved scale to edge, removable mechanical stage to top, with x & y adjustment, focusing via rackwork with screw fine adjustment, body tube with slide in/out analyser, centering, single drawer tube