Muirhead & Co., electrical engineers & contractors and manufacturers of electrical & telegraphic apparatus. (1893)
Muirhead & Co. · Muirhead & Co. · leaf 18
STANDARD CELLS. 11 SECTION II • « • * STANDARD CELLS. oo. Muirheads Patent portable form ofClark Standard Cell, in circular brass rase, with thermometer ■ * * • it • t 1 15 0 … 90. 91.—Ditto, with upright thermometer • * * * i * 1 15 0 r ■■
Electrical Equipment · Lightning protection for structures · Lightning protection for buildings · Batteries · Lighting · Maintenance testing of electrical systems · Wiring devices
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