Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 333
Level Recorders. Thesmall capacity results in small transmission of air be-tween the tube and the bulb. A modification of this tube is used in our DifferentialRecording instruments which have proven so suiocessful.The rapidity with which instruments having this type ofactuating movement have been… … Iniiiroved HeconliuK riicriiioiMiIcrs Foxboro Thermographs or Recording Thermometersare made in many different styles, and in three sizes, viz.:—S, 10 and 12-inch. They can be supplied in any range from —60 to SiOOdegrees Fahr or its equivalent in Centigrade or Reaumur. These instruments can be…
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