accessories for optical bench, including an electrometer
Date: 1900-1950
Inventory Number: 1996-1-0636
Classification: Electrometer
Dimensions:mounted on base: 28 x 37 x 11 cm (11 x 14 9/16 x 4 5/16 in.)
Bibliography:Spindler & Hoyer Instrument Catalogues
Description:
This set of accessories consists of an opaque white glass screen, two polarizers (without optics), a convex lens and bifilar electrometer. According to one Spindler & Hoyer catalogue, it is equipped with insulated side electrodes. Its measuring range is 10-250 Volt. The insulation of the auxiliary electrodes allows to extend the measuring range. It is also equipped with a cable release.
All of these accessories fit on a wooden supporting base, triangular in shape. Only the electrometer is signed. It is unclear whether the other accessories are from this maker.