Additel Corporation is one of the leading worldwide providers of process calibration tools.  For many years Additel has successfully developed automated pressure calibrators, digital pressure test gauges, digital pressure calibrators, pressure test and calibration pumps, and multifunction process calibrators. Additel products are currently used in over 60 countries worldwide.

Additel Product Range


IFG De Wit gauges, test gauges, differential pressure gauges, chart recorders, dead weight testers, thermowells and calibration equipment.

De-Wit Product Range



McDaniel Controls manufacture pressure gauges including all stainless steel, general service, process, speciality liquid filled, utility, vacuum, compound, ammonia and safe zone reflective.

McDaniel Controls Product Range