Suitable for all O.D., I.D., and surface grinding operations. Included center line gage ensures accurate setting of diamond. Critical parts are hardened and ground to close tolerances. Both radius and angle dressing are controlled by a knob so that the operator's hands remain far from the point of contact. Uses standard 3/8" shank diamonds. Diamond included. Maximum dia. of wheels 12". Concave (Internal) Radii 5/8" - 1-5/8". Convex (External) Radii 0 - 1-5/8". Height of Center 3.4". Tangent travel from center 2".