12 Precision Measuring Instruments, C. 1870-1900 - Mar 25, 2023 | Auction Team Breker In Nrw
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12 Precision Measuring Instruments, c. 1870-1900

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12 Precision Measuring Instruments, c. 1870-1900
12 Precision Measuring Instruments, c. 1870-1900
Item Details
Description
12 Precision Measuring Instruments, c. 1870-1900
1) Kohlrausch's universal bridge, no. 1822, Hartmann & Braun, with comparative resistors from 0.1 to 1000 ohms, induction coil and slide resistor, on mahogany base. - 2) Precision plug resistor with manganese wire-winding, no. 10320, Siemens & Halske, 11 2/5 x 7 in. - 3) Ammeter, Hartmann & Braun, 100 A, walnut case, height 7 4/5 in. - 4) Mirror galvanometer by Hartmann & Braun, no. 1304, brass case, height 9 1/2 in. - 5) United ammeter and voltmeter, no. 228, Reiniger & Co, Munich, up to 150 volts and 150 amps, crack in scale glass, transportable in box. - 6) Rotary capacitor, A.W. Gamage Ltd., London, graduation in microfarads, in glass cylinder. - 7) Resistor box, J. Carpentier à Paris, no. 1094, with 4 sliding contacts. - 8) Auxiliary resistor, Otto Wolff, Berlin, with 2 cranks and 1 plug-in board for the currents of 0.1, 0.01, 0.001 and 0.0001 amperes. - 9) Rotary rheostat, J. Carpentier à Paris, circular brass case. - 10) French instrument, P. Vinay, function not known, with 4 electrical connections, height 10 ½ in. - 11) Precision plug resistor with manganese wire winding, no. 557, "Siemens Units", Latimer Clark Muirhead & Co., Westminster, brass fittings, hard-rubber plate and walnut case, with 5 plugs. - And: 12) Tangential galvanometer, Philip Harris Ltd., Birmingham, no. 20344, height 21 cm.

12 Präzisions-Meßinstrumente, um 1870-1900
1) Kohlrausch's Universal-Brücke, Nr. 1822, Hartmann & Braun, mit Vergleichswiderständen von 0,1 bis 1000 Ohm, Induktionsspule und Schiebewiderstand, auf Mahagonisockel. - 2) Präzisions-Stöpselwiderstand mit Manganindrahtwicklung, Nr. 10320, Siemens & Halske, 29 x 18 cm. - 3) Amperemeter, Hartmann & Braun, 100 A, Nußbaumkasten, Höhe 20 cm. - 4) Spiegel-Galvanometer, Hartmann & Braun, Nr. 1304, Messinggehäuse, Höhe 24 cm. - 5) Vereinigter Strom- und Spannungsmesser, Nr. 228, Reiniger & Co, München, bis 150 Volt und 150 Ampere, Riß im Skalenglas, transportabel in Kasten. - 6) Drehkondensator, A.W. Gamage Ltd., London, Teilung in Mikrofarad, in Glaszylinder. - 7) Widerstandkasten, J. Carpentier à Paris, Nr. 1094, mit 4 gleitenden Kontakten. - 8) Hilfswiderstand, Otto Wolff, Berlin, mit 2 Kurbeln und 1 Steckbrett für die Stromstärken von 0,1, 0,01, 0,001 und 0,0001 Ampere. - 9) Kurbel-Rheostat, J. Carpentier à Paris, rundes Messinggehäuse. - 10) Französisches Instrument, P. Vinay, Funktion nicht bekannt, mit 4 elektrischen Anschlüssen, Höhe 27 cm. - 11) Präzisions-Stöpselwiderstand mit Manganindrahtwicklung, Nr. 557, "Siemens Units", Latimer Clark Muirhead & Co., Westminster, Messing, Hartgummiplatte und Nußbaumkasten, mit 5 Stöpseln. - Und: 12) Tangential-Galvanometer, Philip Harris Ltd., Birmingham, Nr. 20344, Höhe 21 cm.

Start Price: EUR 280

Condition
(2-3/-)
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12 Precision Measuring Instruments, c. 1870-1900

Estimate €500 - €800
See Sold Price
Starting Price €280
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