Founded in 1998 and headquartered in Mumbai, Maharashtra, India, Caltech Instruments Pvt Ltd specialises in manufacturing and supplying instruments for coating inspection, non-destructive testing, and corrosion protection. Its product range includes coating thickness gauges, holiday detectors, ultrasonic thickness gauges, and cathodic protection instruments. Serving industries such as oil and gas, pipelines, and petrochemicals, Caltech holds ISO 9001:2015 certification and operates worldwide through a wide distributor network, with offices in Chennai, Kolkata, Delhi, and Ahmedabad.