Thermco’s Precision Hydrometers are manufactured to exacting standards for accuracy, uniformity, and dependability. Thermco’s offering of hydrometer include Glass & Plastic Hydrometers in the following scales... Specific Gravity Baume and Density Hydrometers, ATSM & API Hydrometers, Alcohol Hydrometers, Brine Brix Hydrometers and Combined Form Thermo-Hydrometers. Thermco's Hydrometers are commonly found in the Petroleum industry, Wine,Brewing & Distilleries industries and Chemistry / Pharmacology industries. Each Hydrometers is individually serialized and provided with a calibration report traceable to NIST standards.