Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 373
Ibarts. Special attention has been paid to the design of allFoxboro Charts. They are made in lliree sizes for S. 10 and 12-inch in-struments. They have long open scales, clear cut unbroken lines,night and day plainly designated by solid and skeletontype. All our charts are made from figures given… … Temperature Controllers—Interior Constmetion. This illustration has been inserted to show the sim-plicity of the Foxboru Controllers. The air control valve is operated by our helical tube,which has proven so successful in Foxboro RecordingThermometers. There is absolutely nothing in this…
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