Long-Blade Feeler Gauge Set, Thickness Range 0.001 in to 0.02 in, Number of Feeler Blades 12/ BLADE LENGTH: 12.000 INCHES NOMINAL BLADE QUANTITY: 12 MEASUREMENT SYSTEM: ENGLISH BLADE TIP WIDTH: 0.500 INCHES NOMINAL BLADE GROUP QUANTITY: 1 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: 0.0080 INCHES BLADE THICKNESS: 0.0100 INCHES BLADE THICKNESS: 0.0120 INCHES BLADE THICKNESS: 0.0140 INCHES BLADE THICKNESS: 0.0150 INCHES BLADE THICKNESS: 0.0200 INCHES BLADE SHAPE: STRAIGHT SPECIAL FEATURES: BLADES ETCHED WITH DECIMAL AND METRIC EQUIVALENTS