The calibration of all torque wrenches is performed the forty three certified testers, by qualified personnel. Each wrench will tested over the full range of tool, to comply with current specifications.
Each tool will be affixed with sticker, giving the date wrench was calibrated. Space this provided for customer the write recall date, for tool to recalibrated. Angle cannot, since not know how often will using the tool daily, weekly, or once in while.