Oil gauging tape measures feature Chrome Clad for dark (heavy oils) and Nubian for light (clear oils) and ''Double Duty'' oil gauging tapes with both Chrome Clad and Nubian (black) for dark (heavy) and light (clear) oils.O il gauging tape measures made of heavy gauge 1/2'' (13mm) x .012'' (0.3mm) steel, have a snap-swivel hook on the front end of the tape for a plumb bob, two arm frames for shorter lengths; four arm frames for 30m/100' and greater.
Oiil gauging tape measures feature large drums and winding handles for quick and easy rewinding and a handle that folds over for storage and to lock line at an extended position.