Measuring Bridge by Siemens & Halske, c. 1890

Measuring Bridge by Siemens & Halske, c. 1890 Thomson measuring bridge with sliding wire, for resistance measurement from 0,1 to 0,000001 ohms, upper part with circular plug rheostat, with 10 plugs an

Resistance Bridges and Wattmeter, c. 1910 1) Resistance bridge with rheostat by "Hartmann & Braun", no. 667, with earphone. - 2) Precision wattmeter by "Siemens & Halske". - 3) Measuring bridge, 3 ro

Telegraph Station by Siemens & Halske, c. 1890 No. 55363, ink-writer, original lacquered brass, with relay and Morse key, drawer with paper strip, on original telegraph station table, size 35 &#

Siemens & Halske Telegraph Station, c. 1890 Complete telegraph ink-writer equipment containing brass telegraph (serial no. 81891) with clockwork motor (working), relay, galvanometer and Morse key, on

Siemens & Halske M89 Wall Telephone, c. 1890 Polished walnut case, serial no. 23140, carbon pencil transmitter, serial no. 53506 M 1889B, 2 Siemens & Halske earphones, serial nos. 124863 and 124253, i

Telegraph Station by Siemens & Halske, c. 1895 Berlin, No. 30561, consisting of spring-driven ink-writer telegraph (working), Morse key, galvanometer, relay and plug bridge, on wood base with no. 392.

Eight Precision Instruments, c. 1890-1910 1) Crank rheostat, Siemens & Halske, six changeable decade resistors, manganese wire-winding, in mahogany case, 14 ½ x 9 in. - 2) Crank resistor, Sieme

Scientific Devices and Measuring Instruments 1) Mirror galvanometer, c. 1918, Siemens & Halske, moving coil system for general laboratory purposes, removable top, height 15 in. - 2) Tangent bussole, c

2 Compensation Devices, c. 1930 1) Variable manganin tension divider according to Raps, manufactured by Siemens & Halske, 5 decades, with lid. - And: 2) Thomson bridge, manufactured by Otto Wolff, Be

1 Electric Motor and 2 Measuring Instruments, c. 1920 1) Small electric motor, 220/240 V, 1/90 hp, 2000 rpm, with belt drive. - 2) Siemens & Halske, ampere meter, 0-30 A, Ø 4 1/3 in. - And: 3) Ampere

German Telegraph Station by Siemens & Halske, c. 1905 Ink writer no. 70276, spring-driven (working), original lacquered brass, with relay, galvanometer, lightning protection and Morse key, drawer with

Morse Telegraph by Siemens & Halske, c. 1885 No. 9288, original lacquered brass, clockwork (working), ink-writer telegraph, drawer with paper strip in plinth base. Morse-Telegraph von Siemens & Halske

Morse Telegraph by Siemens & Halske, c. 1895 No. 13883, original lacquered brass, clockwork (working), ink-writer telegraph, with separate paper strip spool. Morse-Telegraph von Siemens & Halske, um 1

German Telegraph Station by Siemens & Halske, c. 1900 Berlin. Ink-writer no. 73386, spring-driven (working), original lacquered brass, with galvanometer and Morse key, drawer with paper strip. Deutsch

Ink-Writer Telegraph by Siemens & Halske, c. 1870 No. 55890, oak base with drawer for the paper strip, low-noise key no. 35422. - In addition: Galvanometer in walnut case. Farbschreiber-Telegraph vo

'Large Induction Coil by Siemens & Halske, c. 1910 For "Gesellschaft für drahtlose Telegraphie", type RF ms2, 17 ¾ x 9 7/8 x 11 2/5 in. 'Großer Funkeninduktor von Siemens & Halske, um 1910 Für "Ge

Telegraph Station by Siemens & Halske, c. 1895 Berlin, no. 20951, consisting of spring-driven ink writer telegraph (working), Morse key, galvanometer and relay, on oak base with drawer for the paper s

Early Radio Components 1) Tickler by Siemens & Halske, c. 1914, model RB 30/4, no. 11069, (grinder), for listening to high-frequency signals by grinding a thin steel wire over a rotating metal disc, r

8 Early Morse Keys 1) L.M. Ericsson & Co, Stockholm, c. 1880. – 2) Silent key by Siemens & Halske, c. 1871. – 3) Camel-back key, USA, c. 1870. – 4) Allei key, iron baseplate, c. 1935. – 5) Ge

German Morse Ink-Writer Telegraph by Siemens & Halske, c. 1895 Berlin, no. 63467, original lacquered brass, spring-driven (working), on walnut base. Deutscher Morse-Farbschreiber von Siemens & Halsk

Two German Desk Telephones 1) Siemens & Halske, c. 1921, desk station for internal telephone calls, 25-section number switch, call button, black-lacquered metal case, external bell, handset with speak

First Siemens & Halske Butterstamp Telephone, c. 1878 Siemens & Halske, Berlin. D.R. Patent, no. 3671, stamped "1528U - 205E", with whistle for calling, turned wood, lateral screw for fine adjustment,

Very Early Siemens & Halske Butterstamp Telephone, c. 1880 Siemens & Halske, Berlin. D.R. Patent, underside stamped "27560 - 1702U - 204E", with whistle for call-ing, turned wood and brass, leather-co

Very Early Siemens & Halske Butterstamp Telephone, c. 1880 Siemens & Halske, Berlin. D.R. Patent, underside stamped with "13363 - 1823U - 204E ", turned wood and brass, leather-covered handle (leather