73111769
Jan 7, 1977
Feb 26, 1980
MEASURING AND TESTING EQUIPMENT-NAMELY, FLUID FLOW CONTROLLERS, [ PNEUMATIC PRESSURE SENSORS, ] PNEUMATIC PIEZOMETERS, LOAD CELLS, FLUID PRESSURE TRANSMITTERS, FLUID AMPLIFIERS, DIFFERENTIAL HEIGHT SENSORS, PRESSURE SWITCHES, LIQUID SAMPLERS WITH DEPTH INDICATOR, READOUT CONTROL BOXES
Electrical and Scientific Apparatus