Muirhead & Co., electrical engineers & contractors and manufacturers of electrical & telegraphic apparatus. (1893)
Muirhead & Co. · Muirhead & Co. · leaf 43
ms, 10 ohms, and 1,000 ohms respec- T/l V c I y *«* •■• *•• ••• • * ■ • # ■ 538. 539, Ditto, test box detector, with vertical needlefitted with commutator for line testing, P.O. pattern ... • » • • r • » • • • * Ditto, portable form, consisting of an astaticgalvanometer in brass case with… … 510.—Gralvanomater, P.O. pan n ... I. ttherjaae ...
Electrical Equipment · Lightning protection for structures · Lightning protection for buildings · Batteries · Lighting · Maintenance testing of electrical systems · Wiring devices
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