Accession No

6672

Brief Description

compound microscope, "Improved" model, by W. and S. Jones, English, early 19th Century

Origin

England; London; 30 Holborn

Maker

W. and S. Jones

Class

microscopes

Earliest Date

1800

Latest Date

1830

Inscription Date

Material

metal; glass; ivory; felt

Dimensions

460mm (height) x 170mm (width) x 170mm (depth)

Special Collection

Michael J. Clark Bequest

Provenance

Inscription

W & S, Jones, 30 Holborn, London

Description Notes

compound microscope, "Improved" model, by W & S Jones, English, early 19th c.

Square wooden base (with felt-lined drawer) with square central brass pillar affixed with three screws. At base of pillar, there is a substage swivelling planoconcave mirror in a gimbal, fitted to pillar with vertically movable clamp; the stage itself is circular, with a spring-loaded base and three wings for accessories, and it pushes into a circular hole at the end of an arm, which in turn is raised or lowered along the rack with pinion and knurled knob; the body tube screws into a second arm that slots through the top of the pillar. This arm has a sculpted tab at one end (for holding?), and a small hole at the other where the body tube and an objective lens can both be screwed in. Objective lenses screw into the end of the arm from below, and sit just below the body tube, which is screwed in from above.

Accessories:
Ivory talc box with one cover slip and five brass retaining clips
Three ivory slides with four objects each. Labelled "N. 1" (different size -- may not be original), "No.7" and "No.8"
Brass tweezers
Stage forceps with ivory tab
Brass fish plate
Brass funnel stop
Two objective lenses
Six-lens disk: this disk has six small objective lenses of differing powers set into it, and once screwed on to the top arm, it can be rotated to align any one of the six lenses with the body tube. As the discs are rotated, a small hole on the disk opposite the small lens hole shows a number from 1-6, indicating the power of the lens.
Two unidentified accessories (small arm that fits into stage wing, and lens at the end of small rod that also fits into stage wing)

References

Events