John Browning Compound Microscope · Atkins Library: Exhibits

John Browning Compound Microscope

Item

Title

John Browning Compound Microscope

Description

The binocular microscope is marked "John Browning London. 280" on the stage. The compound microscope is made from brass and stands on a splayed Y-shaped foot with a decorative varnish. The lower limb ends in an inclination joint which allows for angling for observation. The microscope also consists of a sub-stage plano-concave mirror which sits in a gimbal and an arm extension which allows for adjustment. The square stage also has a decorative pattern which matches the foot. The stage has an attachment to hold the slides in place as well as two removable stage clips to hold slides in place. The slide can be adjusted via the X and Y axis by the two thumbscrews on the side of the stage. The instrument also has a sub-stage iris diaphragm with three apertures which can be adjusted by swiveling the disc. Coarse focusing is achieved by a rack and pinion mechanism controlled by a large thumbscrew parallel to the stage. Fine focusing is controlled by the by a smaller thumbscrew at the end of the body-tube.

The microscope comes with the following accessories: 3 objective lenses with brass canisters, signed "John Browning, London 1 1/2 In 16," "John Browning London 1/4 In 100," and "1/16 b Immersion, C. Baker Agent London." 2 ocular lenses, stage forceps, bullseye condenser with stand, 17 glass slides, 1 nosepiece analyzer and 1 eyepiece analyzer.

Condition:

Cosmetically: The brass is in good condition and the instrument still retains its original pattern on the stage and foot. The substage mirror has some cracks but is in good condition.
Optically: The lenses are clear and functional.
Mechanically: The instrument is functional; however, the inclination joint is slightly loose.

Subject

Microscopes

Creator

John Browning

Source

Dean Reynold's Microscope Collection Powerpoint

Publisher

UNC Charlotte

Date

c. 1850-1900

Contributor

Laura Burgess

Rights

Texts and images from this collection may not be used for any commercial purpose without prior permission from the Graduate Office, UNC Charlotte.

Relation

N/A

Format

Microscope: 13 1/2" closed, 17" extended
Case: 15 1/2" x 8" x 6"

Language

English

Type

Three-dimensional object

Identifier

180415

Coverage

London, England

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