2401 series mechanical heavy duty measuring unit for dual measuring wheels for better stability and contact, frame/bulkhead mounted. This rugged instrument has a wide range of applications where an accurate record of length is required. It is strong, heavy duty unit for use on calendars, tenters, rolling, ribbon winding, textile machinery and almost all other continuous manufacturing processes. The 2401 (single wheel) unit is mounted or hung from a supplied stay rod, 17.99" (457mm). It incorporates a hinge arrangement on the stayrod so they can be positioned at any angle. Incorporates the 3602 counter and measuring wheels.