Tech Cal is a chart recorder manufacturer located in Houston, Texas. Our Tech Cal Chart Recorders are made with genuine Pelican Cases® and are the toughest, most dependable, and most accurate mechanical recording devices in the world. Our products are 100% made in the USA and are assembled and calibrated by highly trained technicians. Our full-service calibration lab will provide fast, high-quality calibration and repair services on all your pressure, temperature, torque, and load test equipment. Since 1998, Tech Cal has been ISO registered and certified to ensure all our customers receive the highest degree of quality. Tech Cal also offers rentals of Tech Cal Chart Recorders and other measuring devices like pressure gauges, digital dead weights, and torque wrenches. We have an extensive stock of Graphic Controls™ chart paper and pens, batteries, and other consumables.