Milton (S-506) Original Dual Head Chuck Tire Inflator Gauge - 15" Hose ACCURATE: Performance-tested and calibrated. Measures in pounds per square inch (PSI, 10-60, 2-lb. increments). Kilopascal readings also available per special order (kPa, 80-840, increments of 20) DUAL HEAD CHUCK: Makes tire valves more accessible with the two heads for easier access INFLATOR: Heavy-duty construction. Magnifying window lens. Full-swivel chuck. 15-inch hose REPLACEABLE PARTS: Gauge and valve cartridges can both be replaced MILTON: This is the first original gauge of this type ever built!