English, circa 1870, microscope height 58cm, combined weight 25kg, Signed 'EDMUND WHEELER LONDON' to rear of foot, standing on large Y-shaped base with tall upright plates supporting the body on trunnions, the large plano-concave mirror in gimbal on sliding collar, fully mechanical substage with X & Y, crown & gear rotation and focussing control, large goniometer stage with scale engraved to perimeter, full X & Y control via rack and screw, slide clip and rest to top, massive course focussing wheels acting on rackwork to rear of column, limb at top incorporating fine focussing mechanism, Wenham prism in drawer at base of body-tube, binocular body-tube with interocular rackwork control, in large fitted mahogany cabinet, complete with large separate case of accessories including, Gillet substage condenser, Wenhams parabolic substage condenser, substage polariser, spot lens, wheel of stops, dark wells, and low power binocular eyepieces, medium power binocular eyepieces, 8 objectives by Ross & Wheeler, vertical illuminator engraved ‘Powell & Lealand Patent 14, HISLOPS ANALYSING SELENITE STAGE BY E. WHEELER’ in satin lined Moroccan leather case, complete with large table bulls-eye condenser, table side reflector, table prism and other accessories Provenance; i) Body tube engraved with original owners name 'Horncastle, Edwinstow' ii) Sold at Sothebys in 2001 'Masterpieces of science and technology from the 16th to 20th centuries', lot 17, a copy of this catalogue accompanies the microscope