All of the original Nova Chuck accessories, jaws and inserts are compatible with the SuperNova2! The unique and user friendly features of this chuck prove it was designed by and for woodturners. Diameter of chuck is 3-7/8", depth is 3-3/8", weight 5-1/2 lb. Includes 50mm jaw set, T-bar, Allen wrenches, woodworm screw and manual.Vernier Calliper: Definition, Diagram, Least Count, Parts ...2022-2-14 · Vernier calliper is defined as a measuring device that is used for measuring linear dimensions and dimensions such as inner and outer diameters and depths of an object. Learn about the least count of vernier calliper, applications and how to read vernier calliper here.