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Muirhead & Co., electrical engineers & contractors and manufacturers of electrical & telegraphic apparatus. (1893)
Muirhead & Co. · Muirhead & Co. · leaf 39
32 ■133. RESISTANCE COILS. -lliG. 167. Circular Rheostat, large, of high resistance, Muirheads slide pattern, for duplex balancingon submarine cables, total resistance 210,000 ohms • a • ■ • ■ • « * t … ■ 4:00 456.—Ditto, ditto, rectangular pattern, two separate dials » • • - i • - - ■ 100.—Rheostat, Wheatstones i t • • • t • • 461. Ditt >, Thomsons continuous, 600 ohms, platinoid wire • i . iii • . . • . ■ • • • 462.—Ditto, ditto, fco carry 20 amperes, low resistance 463 — Rheocord, L)u I^i-…Electrical Equipment · Lightning protection for structures · Lightning protection for buildings · Batteries · Lighting · Maintenance testing of electrical systems · Wiring devices
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