995.3.1: Microscope, Monocular, c. 1890

Additional Images

995.3.1: Microscope, Monocular.
Image No. 1211 ; Photographer: Helen Kingsley

Object Description

This instrument has all the features of a late 19th-century Continental microscope. A short rectangular pillar sits on a horseshoe base and supports the limb and the fixed stage. The body-tube has a rack and pinion for coarse focusing and carries a triple nosepiece. Fine focusing is via the micrometer screw on the top of the limb. The swing out substage, consisting of a condenser, iris diaphragm and filter holder can be raised or lowered. The swing out double mirror is attached beneath the stage. Accessories include #2 x4 optic lens eyepiece, 3 objective lenses with canisters: #3, #6 and a 1/12 [oil immersion] Apert. 1,30 all signed "E. Leitz Wetzlar", also "agent C. Baker" with address signed on canister tops. The base is signed "C. BAKER 244, HIGH HOLBORN LONDON" with serial number "5811". The microscope comes with wooden carrying case with leather handle and wool felt cushion for microscope base, shelf and key missing. Glass slide with sample of "Libro cartilage de P'oreille humain". Microscope stands 28cm in closed position and 36.5cm fully extended.

Object Classification

Accession Number: 995.3.1
Collection: Diagnostic, Laboratory
Date: c. 1890

Object Dimensions

  • Height: 34 cm
  • Width: 14 cm
  • Depth: 18.5 cm

Object Parts

  • a) Hinged case with handle
  • b) Pillar, limb with focusing screws, rack and pinion holder, stage, substage, mirror, horseshoe base
  • c) Body and draw tube with nosepiece attached
  • d) 2 stage slide clips
  • e) Eyepiece
  • f) Objective lens #3
  • g) Objective lens #6
  • h) Objective lens 1/12 oil immersion
  • i) Objective lens #3 canister lid
  • j) Objective lens #3 canister base
  • k) Objective lens #6 canister lid
  • l) Objective lens #3 canister base
  • m) Objective lens canister base for 1/12 [oil immersion]
  • n) Objective lens canister lid for 1/12 [oil immersion]
  • o) Hand written labeled glass slide with sample

Object Materials

  • brass,
  • cast iron,
  • coating,
  • copper alloy,
  • glass,
  • ink,
  • lacquer,
  • leather,
  • paper,
  • plating,
  • silvering,
  • steel,
  • wood,
  • wool felt

Acquisition Detail

  • Manufacturer: Baker, C. (Microscope made by C. Baker with objectives and canisters by E. Leitz Wetzlar.)
  • Owner: Dr. Conrad Mackenzie
  • History of Use: This microscope was purchased by Dr. William Keiller (1861-1931) in Edinburgh, Scotland, prior to his appointment in 1891 as the first Professor of Anatomy at the University of Texas Medical Branch at Galveston.