Manufacturer of micromechanical test systems, ultrasound calibrators and heart valve and vein graft durability machines. Products are used to test the durability of materials and valves and grafts prior to surgical implant. Products are sold to the materials and biomedical industries. The bulk of revenue is derived from activity in the test & measurement industry. International sales are between 2.5% and 10% of sales. Company is female-owned. Products include micromechanical materials test systems, heart valve durability machines, Vein graft durability machines, ultrasound calibrators.