Measuring or testing machines and instruments, namely, electronic balances and electronic scales, [ hygrometers, gravimeters, counting scales, electric meters, voltmeters, ohmmeters, flow meters, concentration meters, electronic vibration meters, metal hardness testing machines, metal strength testing machines, rubber testing machines, concrete testing machines, ultrasonic flaw detectors, viscosimeters, and moisture analyzers; ] computer programs for evaluating and determining the installatio...