Accession No

1807

Brief Description

achromatic compound microscope, by William Ladd, English, 1860 (c)

Origin

England; London; Regent Street and 11 and 12 Beak Street

Maker

Ladd, William

Class

microscopes

Earliest Date

1860

Latest Date

1860

Inscription Date

Material

metal (oxidised brass, brass; mercury); glass; wood

Dimensions

height 397mm; depth 180mm; breadth 155mm; box length 405mm; breadth 207mm; height 162mm

Special Collection

Heywood collection

Provenance

Purchased from the H.Heywood collection under estate duty exemption benefit with the assistance of a Science Museum grant-in-aid.

Inscription

‘W. Ladd
11 & 12 Beak Stt.
Regent Stt.’

Description Notes

Oxidised brass tripod type foot to horseshoe with pivot supporting a dovetailed limb; which carries all the elements swinging plano / concave mirror on a double pivot; substage unit for condenser with knurled screws operating slight horizontal and lateral motions; square stage with 2 knurled screws operating lateral and horizontal motions; revolving diaphragm dial below; pierced plate carries body; draw tube; chain operated focussing with knurled screw either side and rod handle; draw tube with 3 marks.
[Fitted] wooden box in which instrument does not fit with 4 eyepieces 2 objectives (1” and 1/4”) in signed brass cylinders one signed and dated 1860; stage forceps; brush; double objective mount; (plus various other accessories which may not belong).

References

Events