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Compound Microscope with Case, by Swift, London, c.1930

Inventory Number 23230

Acknowledgement: © History of Science Museum, University of Oxford, inv.23230

Subject
Microscopy
Item type
Object
Provenance
Lent by the Royal Microscopical Society in 1970. Presented to the Society by Lionel Percy Clarke FRMS on the 14th of February 1940.
Primary inscriptions
"J SWIFT & SON LONDON 16860." on the stand "UNIVERSAL" on top of the pillar. "W.WATSON & SONS LTD LONDON. PARACHROMATIC CONDR. 2/7 1.0 N.A. LESS FRONT LENS. .4 IN. 0.35 N.A" on substage condenser.
Object type
Microscope
Dimensions
Weight: 7.84kg
Inventory No
23230
Accession Number
1970-101/part

Description

A heavy stand is connected to the curved limb by a compass joint. The body tube is mounted on the limb on rackwork for coarse focusing. The assembly is moved by two graduated knobs for fine focus. The circular rotating stage is graduated in degrees. The mechanical stage plate has two sliding brackets to hold specimens and two vernier scales. The substage assembly moves on rackwork and includes an iris diaphragm, selenite disk holder and condenser. The plano-concave mirror is held in a horseshoe mount on a post below the stage. The eyepiece is a Zeiss number four and pushes into the top of the body tube.

The instrument has a mahogany case with a key operated lock and fitted internal supports.

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