LOT 0246 Eight Precision Instruments, c. 1890-1910
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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, Siemens & Halske, with three decades, height 7 1/5 in., Ø 6 ¾ in. - 3) Series rheostat with plug circuit, Hartmann & Braun, three rows on ebonite plate, mahogany case, 11 ¾ x 6 ¾ in. - 4) Series rheostat with plug circuit, No. 6819, Siemens & Halske, two rows on ebonite plate, manganese wire-winding, mahogany case, 10 1/5 x 5 in. - 5) Crank resistor, unmarked, one decade. - 6) Series rheostat with plug circuit, Siemens & Halske, four rows on wood plate, ebonite case, 9 7/8 x 6 ¼ in. - 7) Measuring bridge, Siemens & Halske, with external grinding wire, metal case, height 6 ¾ in., Ø 6 ¼ in. - And: 8) Series rheostat with plug circuit, No. 1797, Siemens & Halske, two rows on ebonite plate, nickel silver wire-winding, regulated at 20 °C, mahogany case, 15 3/5 x 5 ½ in. 8 Präzisionsinstrumente, um 1890-1910 1) Kurbel-Rheostat, Siemens & Halske, 6 schaltbare Dekadenwiderstände, Manganin-Wicklungen, in Mahagonigehäuse, 37 x 23 cm. - 2) Kurbelwiderstand, Siemens & Halske, mit 3 Dekaden, Höhe 18,5 cm, Ø 17 cm. - 3) Serien-Rheostat mit Stöpselschaltung, Hartmann & Braun, 3 Reihen auf Ebonitplatte, Mahagonigehäuse, 30 x 17 cm. - 4) Serien-Rheostat mit Stöpselschaltung, Nr. 6819, Siemens & Halske, 2 Reihen auf Ebonitplatte, Manganin-Wicklung, Mahagonigehäuse, 26 x 13 cm. - 5) Kurbelwiderstand, unbezeichnet, 1 Dekade. - 6) Serien-Rheostat mit Stöpselschaltung, Siemens & Halske, 4 Reihen auf Holzplatte, Ebonitgehäuse, 25 x 16 cm. - 7) Meßbrücke, Siemens & Halske, mit außenliegendem Schleifdraht, Metallgehäuse, Höhe 17 cm, Ø 16 cm. - Und: 8) Serien-Rheostat mit Stöpselschaltung, Nr. 1797, Siemens & Halske, 2 Reihen auf Ebonitplatte, Neusilber-Wicklung, reguliert bei 20 °C, Mahagonigehäuse, 39 x 14 cm. Start Price: EUR 280
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