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Proto torque testers are best suited for analysing and calibrating hand tools for nut & bolt fastening operations in quality control, scientific equipment and production, automotive, instrumentation & mechanical applications. These electronic torque meters feature built-in buzzer for informing user when the pre-set torque value is met and when torque requirement is exceeded. Selected models feature peak, hold and dial modes for ease-of-use and display output reading in three different units (Nm, pound per inch and pound per foot) with accuracy up to +/- 1% CW and +/- 3% CCW digits for user convenience and precise torque output. They come packed in blow mould cases for job-site protection and portability. Choose from a wide range of these meters in battery-operated and AC/DC adapter variants on Raptor Supplies, an authorised Proto distributor.