• F model series for large size bolts. • Flat beam and direct reading type, graduated in clockwise and counterclockwise. • Since the unique tapered beam keeps internal stress constant and does not generate any friction, the wrench is durable. • Force is applied by winch or lever block, mechanical loading type. • Memory pointer is equipped as standard accessory. • Applicable to use in the EU region. Comply with calibration procedures of ISO6789 Type I Class A.