MHS Collection Database Search

Record Details

Portable Compound Microscope with Case and Accessories, by Powell & Lealand, London, 1850

Inventory Number: 49395
Object Type: microscope
Place Created: London England United Kingdom Europe
Subject Classification(s): Microscopy  
Accession Number: 1970-101/part
Brief Description: This instrument is made of German silver. An alloy of fifty percent copper, twenty five percent nickel and twenty five percent zinc. A bracket holding the limb is attached to the folding tripod by a compass joint. A triangular bar can be racked upwards from within the limb. The arm that holds the body tube is attached to the top of the bar. A micrometer screw on the arm adjusts the fine focus. The body has two draw tubes, one of which is moved by a rack and pinion. The eyepiece pushes into the top of the tube. Objectives, or a rotating nosepiece, screw into the underside of the arm. The stage is mechanical. It has a spring clip and a bracket to hold specimens. A condenser with various apertures is mounted on a dovetail plate below the stage and can be focused by a rack and pinion. A plano-concave mirror is mounted at the lower end of the limb. The wooden case holds a body and draw tube, seven objectives, one with three button lenses, four eyepieces, two specimen compressors, a polarizer, an analyzer, two Lieberkuhns, two sets of stage forceps on steel pins, four blue glass filters, a thread adaptor, a Brooke double nosepiece, an Amici superstage prism and a Bull's-eye lens on a stand with a lead-weighted base.
Primary Inscriptions: "Powell & Lealand, 4, Seymour Place, Euston Square, London. 1850"
Provenance: Lent by the Royal Microscopical Society in 1970 Eliot Merlin Bequest 1948.
Collection Group: Royal Microscopical Society Collection
Material(s): German silver.
Dimensions:
Height Width Depth Diameter Unit
315 150 mm

Narratives

Image with multimedia irn 45036Image with multimedia irn 45037Image with multimedia irn 45038Image with multimedia irn 45039Image with multimedia irn 45040

Permalink: http://www.mhs.ox.ac.uk/object/inv/49395