Watermark detector
H. and A. Wallace
Category
Technological items
Date
Unknown
Materials
Wood
Measurements
74 x 118 mm
Place of origin
London
Collection
Tyntesfield, North Somerset
NT 15284.3
Summary
Watermark detector - Philatector, wedge-shaped with on/off white plastic switch on the right hand side. Inside is a battery clamped onto the base with a bulb holder. Labelled; EMBODYING / THE LATEST / IMPROVEMENTS / IN BATTERY / MAKING / TECHNIQUE / MADE IN ENGLAND / BY THE GENERAL ELECTRIC Co / OF ENGLAND. Details on the front, in a diamond-shaped label read; H and A WALLACE / LONDON PATENT APPLIED FOR.
Provenance
Purchased from the estate of the late Lord Wraxall with the assistance of the NHMF and donations from members and supporters.
Makers and roles
H. and A. Wallace, supplier The General Electric Company Ltd, manufacturer