Your source for a wide variety of ASTM thermometers, hydrometers and more!View our product listings below ASTM & General Use Thermometers Digital Tank Gauging Thermometers ASTM & General Use Hydrometers Electronic Gauging Tapes High Precision Digital Thermometers Lufkin Oil Gauging Tapes Precision Weight Sets Petroleum Samplers Petroleum Glassware Sampling and Gauging Supplies Viscometers Water Finding and Gas Gauging Paste Viscosity Standards Robinson Centrifuges Centrifuge Tubes Crude Oil Transport Sampling and Testing Kit Calibration Baths