0.25mm-6mm Metric 4G-62G Witworth Screw Thread Pitch Measure Gage Set Leaf Quantity: 52; Product Name: Screw Pitch Gauge Material: Metal; Weight: 77g Package Content: 1 x Screw Pitch Gauge; Thread Type: Metric 60 Degree / Whitworth 55 Degree Pitch Range: Metric: 0.25-6, Whitworth: 4G-62G; Main Color: Silver Tone Overall Size: 65 x 13 x 23mm/ 2.6" x 0.5" x 0.9" (L*W*H)