Watson Microscope Serial Numbers

1. Spencer Microscope Serial Numbers

Record Details Van Heurck Type Binocular Microscope and Accessories, by W. Watson & Sons, London, 1926 Inventory Number: 50989 Object Type: Place Created: Accession Number: 1967-273 Brief Description: Van Heurck type. Large research model. Accessories in separate plastic bag. The instrument is supported on trunnions on a heavy tripod base. The angle of the limb can be locked in place with a tightening screw operated by a steel lever. The top of the limb is shaped into an arm supporting the body.

A brass plate dovetails onto the arm, held in place by screws. Another plate slides in a dovetail slot in the first and is moved by a rack and pinion. The steel mounting for the binocular eyepieces and brass body are screwed to this plate. A graduated, double mill-edged knob at the base of this arm operates the fine focus and two mill-edged knobs work the coarse focus. Three objectives screw into the rotating nosepiece. The 'circuit stage' consists of a rectangular, mechanical stage with steel spring clips to hold slides and two knobs to adjust its position, mounted on a brass turntable.

Below the stage a condenser with a variable aperture is mounted on a rack and pinion with a brass knob for focusing. A brass cylinder also extends below the stage and supports the plano-concave mirror. Accessories associated with this microscope are a brass body tube and an objective can inscribed 'holos 12 mm' and the manufacturer's name and address. This microscope belonged to the Oxford anatomist John Randal Baker (1900-1984). Primary Inscriptions: 'W. Watson & Sons Ltd.

/ 313 High Holborn / London.' And 'Circuit Stage / 'Van Heurck' '; serial number 38416. 'High Power Binocular'. Provenance: Presented by Dr J.

Spencer Microscope Serial Numbers

Baker in 1967. Collection Group: Material(s): Narratives.