Manufacturers and exporters of all types of scientific & laboratory instrument, Laboratory Glassware & Plastic-ware & Porcelain-ware, Medical & Surgical Equipment, Biological Models, Anatomical Models & Charts. Dealers enquires are solicited for the company
 

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POST OFFICE BOX, PLUG TYPE
 
POST OFFICE BOX, PLUG TYPE (1678)
The heavy brass contact blocks fitted to the bakelite plate. The inter-changable plugs are cut to a fine taper. Each resister independently mounted with double leads wound with manganin wire non-inductive, dipped in boiling wax. Provided with 3 ratio coils of 1000, 100 and 10 ohms, Rheostat arm 1-5000 ohms and two tapping keys for galvanometer and battery in polished wooden case with hinged lid of size 280 x 200 x 175mm.
Accuracy: 0.05%

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