Profile: Ampac International, Inc. designs and manufactures magnet wire testers. The Nova™ 600 repeated scrape abrasion tester determines the scrape abrasion resistance of magnet wire insulation. The loaded scrape head reciprocates at a rate of 60 cycles per minute (1 forward and backward stroke is 1 cycle) and a stroke length of 3/8 inch (10mm). The wire sample is manually rotated through 0, 120 and 240 degree after each test, allowing for a total of 3 scrape tests per sample. This procedure also helps to indicate any eccentricity of the insulation on the wire. When the scrape needle scrapes through the wire insulation and exposes the bare conductor, the tester stops and the number of cycles is recorded on the digital counter. The Nova™ 1900 magnet wire resistance tester determines the resistance of magnet wire and bare wire. The resistance test is also used to determine the diameter of fine wire (45-50 AWG). The wire mounting fixture can hold a 1-meter or a 3-foot wire specimen between the kelvin bridge contacts in an enclosed enclosure (for fine wire test fixture only). The resistance bridge is located close to the wire mounting fixture to minimize error and is equipped with a universal temperature compensator & 4-wire kelvin connectors for accuracy. This tester bridge has 6 measuring ranges from 20 milliohm to 2 K-ohms with a 1 micro-ohms resolution on the 20 milliohm range.