1. the temperature readings of the furnace thermocouples and temperature measuring instrument shall be within ±1.0% of the temperature readings obtained by comparison test with a standardized, potentiometer type instrument, of known accuracy, used with a calibrated thermocouple.2. when an oven is being surveyed for qualification to heat treat government contract work, the authorized government representative shall be invited to witness the qualification tests.
부탁드려욤~~