Feeler Gauge Set, Thickness Range 0.0015 in to 0.04 in, Number of Feeler Blades 25/ BLADE LENGTH: 3.063 INCHES NOMINAL BLADE QUANTITY: 25 MEASUREMENT SYSTEM: ENGLISH BLADE GROUP QUANTITY: 1 BLADE LOCK: INCLUDED BLADE THICKNESS: 0.0015 INCHES BLADE THICKNESS: 0.0020 INCHES BLADE THICKNESS: 0.0030 INCHES BLADE THICKNESS: 0.0040 INCHES BLADE THICKNESS: 0.0050 INCHES BLADE THICKNESS: 0.0060 INCHES BLADE THICKNESS: 0.0070 INCHES BLADE THICKNESS: 0.0080 INCHES BLADE THICKNESS: 0.0090 INCHES BLADE THICKNESS: 0.0100 INCHES BLADE THICKNESS: 0.0110 INCHES BLADE THICKNESS: 0.0120 INCHES BLADE THICKNESS: 0.0130 INCHES BLADE THICKNESS: 0.0140 INCHES BLADE THICKNESS: 0.0150 INCHES BLADE THICKNESS: 0.0160 INCHES BLADE THICKNESS: 0.0170 INCHES BLADE THICKNESS: 0.0180 INCHES BLADE THICKNESS: 0.0200 INCHES BLADE THICKNESS: 0.0220 INCHES BLADE THICKNESS: 0.0250 INCHES BLADE THICKNESS: 0.0300 INCHES BLADE THICKNESS: 0.0320 INCHES BLADE THICKNESS: 0.0350 INCHES BLADE THICKNESS: 0.0400 INCHES BLADE SHAPE: STRAIGHT SPECIAL FEATURES: BLADES ETCHED IN DECIMAL AND METRIC EQUIVALENTS