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Three Objectives; two signed by Powell & Lealand, London, c. 1875-1900

Inventory Number 99403

Subject
Microscopy
Item type
Object
Provenance
Lent by the Royal Microscopical Society in 1970.
Primary inscriptions
1-inch unsigned. 1/8-inch signed "POWELL & LEALAND", collar marked 0-50. 1/8-inch signed "Powell & Lealand", collar marked 0-50.
Other inscriptions
On envelope wrapping in green ink: "RMS No 103 3 Objectives by P&L 1" with Lieb 1/8 cov.? collar (old lens) 1/8 water immersion (Dry ?front, separate box)"
Object type
Microscope accessory
Inventory No
99403
Accession Number
1970-101/part

Description

Three objectives, two of which are signed by Powell and Lealand. The following objectives are present:

1 inch objective with a push on Lieberkühn. Objective is housed in a copper alloy body with a thread for attachment to a microscope. The objective is stored in a can with threaded lid. The lid and base of the can are engraved with the objective's power;

1/8 inch water immersion objective, signed Powell & Lealand. Objective has a correction collar marked 0-50. Objective is stored in a can with threaded lid. The lid and base of the can are engraved with the objective's power. A 1/8 inch immersion lens to fit objective is stored in a separate can, engraved with the power of the lens;

1/8 inch objective, signed by Powell & Lealand. Objective has a correction collar marked 0-50. Objective is stored in a can with threaded lid. The lid and base of the can are engraved with the objective's power.

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