A stand-alone device developed to be used just like traditional hydraulic hand dynamometers. With the added capability to save strength testing results in memory, strength testing can be performed and the results reviewed and recorded after all tests are complete. When connected to a PC using USB cable, the Data Transfer Software can transfer the stored test results form the DHD-1 memory into test (.txt) files which can be easily assessed using Notepad or MS-Word for editing and printing.