HomeWoodturning ToolsMeasuring ToolsSizing Gauges & CallipersDouble-ended Callipers (974 | 977) Double-ended Callipers (974 | 977) These are an indispensable addition to the turner’s armoury for measuring both wall thickness and diameters. Because of their design the measurement taken at one end automatically transfers to the opposite end. This enables the turners to take an accurate measurement reading without the need to remove the callipers. Available in 4″ and 7″ models. The 7″ version has an increased depth of throat at one end which permits the callipers to be used in large diameter vessels which have restricted openings. Categories: Measuring Tools, Sizing Gauges & Callipers, Woodturning Tools Find a Stockist Additional Information Warranty SKU Code Description/Type Size (in) Cat Page Number H974000 4" Double-ended Callipers 4" H977000 7" Double-ended Callipers 7" Robert Sorby tool sets now come with a lifetime guarantee. Simply follow the link below and complete the registration form, ensuring that you include the set’s registration number. You will find this on the warranty card that came with your tool set. Note: this warranty does not cover wear through natural usage or damage caused by misuse or negligence. Please retain your receipt as proof of purchase. Register your product Share this on: Related products Standard Skew Chisel (810) Slim Fluted Parting Tool (832) Negative Rake Scraper (821) Curved Scraper (828)