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A group of scientific instruments and technical devices including a Pye & Co galvanometer, a wooden cased stroboscope, a Reynolds & Branson Ltd of Leeds measuring instrument with steel needle, a gyroscope on column modelled as a classical dolphin and similar later plastic cased device, an Air Ministry rotary transformer, serial no.LJ8940, and general electric dynamotor model 5DY82AB1, and a number of further instruments.

VINTAGE GALVANOMETER & MICROSCOPE BOX WITH SLIDES (NO SCOPE)

Siemans Brothers, London Galvanometer, resistance meter, c.1910

W.G. Pye & Co Galvanometer

A Tangent Galvanometer, by W G Pye & Co

A Mahogany Cased Galvanometer, by Edison & Swan, together with small GPO Variable Resistance

A Victorian Galvanometer set beneath a glass dome within a pine travelling box

A galvanometer with box and certificate

2 brass mounted mahogany galvanometer, a cockpit clock etc

A Collection of Seven Various Amp Meters, Galvanometer, Yards Per Minute etc

WWII US Army blast galvanometer in a leather case

A collection of military gauges, along with a various remote conductors and a Cambridge instrument galvanometer model no24A

A W.G. Pye & Co. Ltd., Cambridge galvanometer, no. 43.728; a high current ohmmeter for 100 tonne volt 80 operation; two Universal abometers; and other items.

A Telegraph Siphon Recorder By Muirhead & Co. Ltd, Westminster, by Muirhead & Co. Ltd, Westminster, numbered 32155, circa 1880, ebonised mahogany base with speed control to side for Froment electric motor, drawer to front containing paper reel, large electromagnetic detector above with ink reservoir, electrical connections to rear, ebonised & glazed mahogany cover with hinged access doors to cover, 33cm height, 34cm wideNote: The ‘Siphon Recorder ‘was originally invented in 1867 by Lord Kelvin. It was initially designed for use with the new trans-atlantic cables laid in 1865. These cables were over 4000 miles in length so instruments of unparalleled sensitivity were required to decode messages. The ‘Siphon Recorder’ was designed specifically for this use.The design is based on a moving coil galvanometer with a powerful electromagnet, but this suspension is too delicate to carry a pen. The pen, which is a fine glass capillary with one end dipping in a reservoir of ink, is mounted on a separate suspension at the front and coupled to the moving coil by silk threads. A vibrator on this suspension keeps the pen moving to overcome static friction. A beautifully built Froment ‘Mouse Mill’ electric bipolar motor then pulls the paper tape through at the required speed. The whole instrument is housed under a lift-off black lacquered mahogany cover. The cover has two opening sections allowing access to the inner workings. A drawer at the front houses the large reel of paper.

W.G. Pye Galvanometer

Sullivan Projection Galvanometer

W.G. Pye Tangent Galvanometer

Early Edison & Swann Galvanometer dated 1918, No. 25306 with leather case and straps

Tinsley Galvanometer type 4789, in fitted box

Cambridge Instrument Co. Unipivot Galvanometer, cased + two others (3) in bespoke case, No. L-37747; together with another Unipivot versatile galvanometer No. L-304481 and a spot galvanometer, No. L-334353 ex-Westlands Aircraft Ltd (both also Cambridge Instrument Society)(3).

GEC Galvanometer No. 10580 with two ranges

Griffin & George Adaptable Galvanometer No. G 15679

Gambrell Bros Mirror Galvanometer No. 828

Walters E M Co Ltd Galvanometer No.363 dated 1912, with silvered dial and brass fitting to top stamped with Broadarrow mark, in mahogany case with opening flaps to either side with tables for degrees/amperes, in leather case stamped with Broadarrow and 'S Colebrook Woolwich 1899'

EDISON AND SWAN GALVANOMETER IN LEATHER CASE C

Pye Galvanometer in grey metal case, a Bunson burner and another Galvanometer(3) Condition Report Click here for further images, condition, auction times & delivery costs

Gambrell Bros. London, Japanned Brass cased Galvanometer No197 on circular mahogany base, H18cm Condition Report Click here for further images, condition, auction times & delivery costs

H. Tinsley & Co. Type 4789 grey metal cased Galvanometer No. 85586, H30cm Condition Report Click here for further images, condition, auction times & delivery costs

Cambridge Instruments High Sensitivity Galvanometer, No. L-155439, mahogany cased with brass fittings, H34cm Condition Report Click here for further images, condition, auction times & delivery costs

Cambridge Instruments Mirror Galvanometer No.L-391980, H22cm Condition Report Click here for further images, condition, auction times & delivery costs

A 1930s mahogany table Galvanometer by Phillip Harris Ltd Birmingham, No 18855, height 24cm together with a start/stop clock by W.G Pye & Co England (2)

Two similar early to mid 20th century wooden clad meters; Volts within walnut case and ampéres within mahogany case, also a light spot galvanometer by Pye & Co of Cambridge (3).

A quantity of apparatus and equipment relating to electricity and magnetism including a Griffin & Tatlock lamp and scale unit, an unnamed tangent galvanometer, a Bambairite cell, two Heathkit rotary resistance boxes, a Force-On-A-Conductor balance, a Griffin & Tatlock compass, a capacitance box, very low resistance apparatus, a current balance, a Hysterisis apparatus, Barlow's Wheel permeameter etc.

BRASS CASED ANEROID BAROMETERsigned on the dial 'C.W. Dixey & Son, Opticians to the Queen, 3 New Bond Street, London', with a suspension loop, together with a brass cased galvanometer by Elliott Bros, London; also two voltmeters and a gauge for a Kalper diesel engine (5)

WWII FLYING HELMET, SIZE 3, MADE BY FRANK BRYAN LTD 1939, A WWII GERMAN BAYONET BY CARL EICKHORN WITH SCABBARD FROG AND BELT, A LEATHER FACE MASK AND GALVANOMETER

A portable Wheatstone Bridge Croydon Precision Instrument Company mahogany cased galvanometer

An antique Marconi Galvanometer, the silvered dial signed "Marconis Wireless Telegraph Company London", in a mahogany case, measuring 4" tall. CONDITION REPORT: In good cosmetic condition, untested.

A Casella student's theodolite,with instructions and pine box,24cm high,an R Winkel brass and black-lacquered monocular microscope,No. 12997, boxed,30.5cm high, and a galvanometer,below a perspex dome on a mahogany stand with adjustable feet,22cm high (3)

A mahogany and brass tangent galvanometer, by W G Pye & Co, Cambridge, 10.5cm silvered register, circular base, stamped No. 8716, 16cm wide overall

A W G Pye & Co. Ltd. galvanometer, together with one other, etc.

A galvanometer, together with vintage gas masks, etc.

A QUANTITY OF VINTAGE ELECTRONIC EQUIPMENT, to include a Galvanometer Everett single phase kilowatts machine, a Farnell function generator, etc.

A QUANTITY OF VARIOUS ELECTRIC METERS, to include a Galvanometer, a filter oscillator, a Sullivan DC Detector, etc

Quantity of Military Equipment, including a short range signalling lamp case with morse key inside lid (missing lamp) 8  x Milliamperes, Galvanometer, Ammeter  dials, Air Ministry marked tool Wilkinson & son 1939, J.Tyzack & Son tool 1943, Gas Mask,military torch, 2 x webbing belts, US Army pick axe head US Diamond Calk 1944, 3 x leather Bandolier cartridge belts plus other items (18 + items) 

20th century black lacquered Tangent Galvanometer by Philip Harris Ltd. No. 21112,on brass adjustable feet, H22cm

A GPO TYPE TELEGRAPH SIGNAL INDICATOR/GALVANOMETER WITH SILVERED DIAL SIGNED J.T MILL, 464/1903 IN GREEN PAINTED ARCHED METAL CASE WITH BRASS TERMINALS, ON MAHOGANY BASE, 13CM H, C1900

An unusual scientific upright vertical compass - galvanometer being marked to the dial for Philip Harris & Co Ltd, Birmingham.                                 Measures 22cm high.

A galvanometer resistance testing tool, housed in a mahogany case, by F.F. Becker & Co., London, together with a piece of yarn testing equipment by Goodbrand & Co., Manchester and Stalybridge, a piece of surveying equipment, in a mahogany case and another similar (4)

A mahogany galvanometer, with a paper register, under a glass dome, 23cm high

A W G Pye & Co Tangent Galvanometer supported on brass tube fitted on an ebonite plate

An Edwardian mahogany stereoscopic viewer with various views and social history cards, together with a Galvanometer by W.G.Pye & Co Cambridge and a slide wire type 4264 (3)

A mahogany and brass tangent galvanometer, by W G Pye & Co, Cambridge, 10.5cm silvered register, circular base, stamped No. 8716, 16cm wide overall

A mahogany and brass tangent galvanometer, by W G Pye & Co, Cambridge, 10.5cm silvered register, circular base, stamped No. 8716, 16cm wide overall

A Robert W Paul galvanometer in a leather case, no. 2133, dated 1917

A Victorian Helmholtz type tangent galvanometer, inscribed MP.004, 42cm high, a part Gambrell Bros galvanometer, and a coil fixing, a similar tangent galvanometer is in the collection of the University of Cincinnati and labelled as by Elliott Brothers

A cased vintage galvanometer by H.W.Sullivan Ltd, London

A cased vintage galvanometer by H.Tinsley & Co, South Norwood

A small collection of assorted scientific and telecommunications implements and instruments to include reflectometer type RFL1, galvanometer No. 24A Mk 1, Cooper Stewart of London speedometer etc

A Cambridge Instruments Co Ltd spot galvanometer, and accessories, cased

A Unipivot Galvanometer No 24A MK I and a Microamperes both produced by the Cambridge Instrument Co Ltd, England both housed in leather cases