This tool is very useful for checking for a correct thread pitch in metric 60 degree thread angle and British standard Whitworth in 55 degree thread angle. The gauge includes 52 blades in different sizes, can be used for measuring metric and British standard bolts. This tool is must have for old equipment and classic car restoration projects.

Features:

• Metric and British Withwoth thread gauges in one tool 
• Helps to identify  size of the external thread  and tooth pitch angle
• Can be used to measure external thread and tooth pitch or withword angle
• Made of strong hardened steel material
• Portable and easy to store

Specifications:

• Brand: Harden
• Model: 580412
• Type: Metric and Brithish standard thread gauge
• Made of hardened steel
• Chrome plated
• Quantity of wings: 52pcs
• Size is punched on each wing
• British 55 degree withworth: 4G,4-1/2G, 5G, 6G, 7G, 8G, 9G, 10G, 11G, 12G, 13G, 14G, 16G, 18G, 19G, 20G, 22G, 24G, 25G, 26G, 28G , 30G, 32G, 36G, 40G, 48G, 60G, 62G 
• Metric 60 degree thread: 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5 6.0
• Dimensions: 2.6x0.8x0.5in or 66.5x20x13mm
• Weight: 2.1oz or 60g

Package includes:

• 52pcs metric and British standard thread gauge
• Retail packaging