• Excellent for sizing bolts, screws, nuts (USS, SAE, and Metric) and twist drills
• Size bolt diameter by pushing bolt through sizing holes
• Gauges hex nuts and washers (USS, SAE)
• Gauges metric hex nuts and washers by holding under metric holes
• Measure US and Metric thread pitch
• Special notch gauges flat headed metal and wood screws
• Ruler marked with inches and millimeters for worldwide use
• Resists water, alcohol, oil, and grease
• Reliable and Accurate
• Sturdy and Lightweight Plastic
• Fits in Shirt Pocket (8-5/8″ x 3-1/4″ or 217mm x 82mm)
