Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 412
o be well adapted for use under or-dinary shop corKiitions, and extremely durable in service. Secondly, the service veniiered by Bristol RecordingInstruments is a much needed service, namely, BristolRecorders help the inaiiilfrer or superintendent to secnreand maintain uniformly efticicnt operating… … Kecording Electric Counter. Bristols Recording Electric Counter connected to aminiature press arranged for hand operation. Each revo-lution of the press closes a contact in the battery circuitto the recorder and the pen is thus advanced a certaindistance on the chart scale toward the outside of…
Architecture · Building · Construction industry · Engineering
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