Required torque loads are set by turning the sleeve until the required setting is opposite the mark All Britool 38in Square torque wrenches indicate with touch sound and sight when the required torque is reached This Britool torque wrench range is distinguishable by a length independent mechanism push through reversible mechanism and a retractable adjustment mechanism which avoids accidental adjustment The torque wrench complies with ISO 6789 and is supplied in sturdy plastic storage case