268MW0052 - Thread Gauges P&N Workshop Thread gauges are used for measuring the pitch of external and internal threads. Available in all common thread forms. Your home workshop or shed setup is not complete without P&N Workshop tools. Whether you are an engineer, tradesman or a serious DIYer, the Workshop range is your perfect choice. The P&N Workshop Range of tools will cater for any job you need to get done right. Size 52 Blades Range (inches) - 4 62 TPI Style - MC / BSW