Supply of API Gauges and Calibration Services Penguin distributes HEMCO gauges ( API 5B , 7-2, 11B etc.), a globally well known gauge brand. Hemco’s product range includes Cylindrical gauges, Thread gauges and special gauging. For almost 50 years, the Hemco Chrome Process has provided the same unyielding, unduplicated hardness, finish and quality to customers worldwide. HEMCO Chrome gauges provide a substantially longer life than plain steel - almost 400% longer. HEMCO Chrome gauges have a coating thickness that exceeds many times the standard gauges available in the market. Penguin will be shortly establishing an API gauge calibration facility to start with a selected range of master gauges certified by NIST, the first of it’s kind in India to offer API gauge calibration services.