HomeWoodturning ToolsMeasuring ToolsSizing Gauges & CallipersInside/Outside Callipers (976 | 9785) Inside/Outside Callipers (976 | 9785) The design of these callipers allows not only the measurement of wall thickness but also inside dimensions like the size of an aperture. As with double ended callipers the measurement at one end automatically transfers to the opposite. Available in 6″ and 8½” models. Categories: Measuring Tools, Sizing Gauges & Callipers, Woodturning Tools Find a Stockist Additional Information Warranty SKU Code Description/Type Size (in) Cat Page Number H976000 6" Inside/Outside Callipers 6" H978500 8½" Inside/Outside Callipers 8½" 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 Oval Skew Chisel (809) Standard Spindle Gouges (840) Slim Fluted Parting Tool (832) Square End Scraper (823)