Hemswell Antique Centres

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Single Coil Vertical Galvanometer made by GPO in England Circa 1920

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Single Coil Vertical Galvanometer made by GPO in England c1920

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Dimensions:

W-14 D-7 H-18 (cm)

Item Reference:

97732-962-1Tip! This item's Ref-Code breaks down thus...
Item Ref Code: 97732-962-1
Item No. 97732 - Dealer No. 962 - Building No. 1

Description

Single Coil Vertical Galvanometer made by GPO in England c1920

General Post Office single coil Cathedral cased galvanometer Type 22A. circ 1920 Serial No 10767. This was probably manufactured by the GPO factory, Telegraph Works in London.

This is a single coil galvanometer type 22A and is in great condition for its age. It is marked G.P,O. on it’s silvered dial with a black indicator needle below a bevelled glass secured by a brass bezel. On the back face are 2 cheese head terminal screws identifying it as a single coil galvanometer. The needle should normally be vertical when facing either north or south and should deflect to either stop pin with a current of 9.3 mA.

The galvanometer is used to indicate the presence and direction of an electric current and not its magnitude. Hence, there is no scale on the instrument and instead the indicator needle is able to move to the left or right being constrained by two end stops.

Specifications

Item Reference
97732-962-1
Dimensions
Height: 18 cm
Width: 14 cm
Depth: 7 cm
Period
20th Century
Material
Mahogany
Country of Origin
England
Condition
Very good condition for age. Dial is clean and unmarked. Some small marks to the mahogany case

Delivery

  • Free Collection from Hemswell, North Lincolnshire (we can store free of charge for four weeks)
  • UK Post for £15, this applies to smaller items that we can box up and simply post to you.
  • UK Courier for £30, this applies to larger items that can be boxed up and collected by a standard courier delivery company.
  • UK Van Delivery by Hand, this applies to furniture, large items or delicate items. This is undertaken by ourselves or by a fully insured van delivery company that is personally known to us. Prices dependant on your location and size/amount of items purchased.

We are able to deliver any item to anywhere in the World, and so for any item/location, we are able to obtain quotes for delivery/shipping.

To make an enquiry call us on 01427 668 389