These lever-action gauges are designed primarily for use in stationary or mobile horizontal cylindrical farm tanks or other tanks with flat heads. They are to be mounted on the centerline in the middle of the head. The maximum recommended float length is 48" [1219mm]. The float and rod assembly are shipped unassembled to the head assembly for maximum flexibility to your inventory. The float rod is cut to the proper length for each size tank, notched, then inserted into the sleeve attached to the short section of lever rod, and crimped for firm retention.