3 New Inside & Outside Precision Calipers This is a new set of 3 inside and outside precision calipers. These are used for measuring inside and outside diameters and all open up to 12". You receive: One outside caliper that measures approximately 13 1/2" (34 cm) long One inside caliper that measures approximately 14" (35.5 cm) long One inside caliper that measures approximately 13 3/8" (34 cm) long Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.