Muscle strength testing equipment benefits your patients by giving them solid evidence of functional losses or improvements with treatment. Dynamometer muscle testing tools from JTECH are the best products available to objectively assess your patient's strength and track their progress at a very fine resolution. Muscle strength testing equipment benefits your patients by giving them solid evidence of functional losses or improvements with treatment. Dynamometer muscle testing tools from JTECH are the best products available to objectively assess your patient's strength and track their progress at a very fine resolution.