The DID is a torque measuring manual screwdriver designed for lab and production use. The large LCD display measures bi-directional torque in real-time or peak modes. USB data output allows the user to graph torque vs time with optional SW-1SD software. The DID has an accuracy of ± 0.5% F.S., ±1 LSD and has programmable setpoints that provide both an audible beep and green/red LED indicator for uniform tightening or GO/NO GO testing. In addition, it features a programmable counter that minimizes assembly errors by identifying mis-tightening and/or defective screws. Optional ratcheting clutch allows for convenient tightening or loosening. Use the 800 internal memory for data recall or USB download for SPC. The DID substantially reduces scrap and rework costs by eliminating over and under-tightening and is ideal for use in a wide variety of applications including the manufacture of electronic, appliance and aerospace assemblies.