The Cambridge Scientific Instrument Company, LTD. · Cambridge University Press · leaf 61
ed manganin, the connections being hard soldered, and are numbered in units (O'Ol ohm) 10, 20, 40, 80, 160, 320, and 640. The bridge wire is of platinum-silver. A vernier is fitted to the contact maker which is also provided with a simple form of slow motion adjustment, not shown in Fig. 56. £ s.… … Fig. 56. Callendar arid Griffiths' Self-Testing Bridge, Type II. Callendar and Griffiths' Self-Testing Bridge, Type III. This bridge has been designed for general research work. It is made in two patterns, either with separate brass blocks or with Collins' patent mercury contacts. The coils are…
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
