Profile: Design Technology, Inc. manufactures diesel and gas hand-held instruments. Our products include manometer, hand-held instruments, multi-purpose meter, timing equipment and other tools. Our manometer reads in inches of water. In this the vacuum is displayed as negative, and pressure is displayed as positive. Our hand-held instruments measure engine RPM on trucks, tractors, automobiles, lawn mowers, chain saws, and generators. We also provide dial bore gage set, filter cutter, dial caliper, battery load tester, rectifier/regulator tester, timing light, leak-down tester, and fuel pressure gauge set.