Bore Gauge, Sleeve Height, Counterbore Gage, Manufacturer suggested retail price. $232.35 Features and Benefits: Compact, versatile gauge. Quickly measures: Cylinder sleeve height using pointed contact. Counter bore depth using flat end contact. Top dead center. Piston-to-deck height. Valve protrusion. Easy readings around entire bore. Fits all diesel engines. Range: 1.00" Graduations: .001" Reading: 0-100 Manufacturer: Central Tools WARRANTY: Repair only up to 90 days