Precision Shop Tools Collet Adapter This is a timesaving accessory for our 827A Edge Finders. It allows quick installation and removal of the edge finder, eliminating the need for collet changes on Bridgeports and similar machines. It can also be used with any other attachment with a 3/8" post. The progressive steps are: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4" and 1". Step depths vary from .100" to .200". A B D E C F SF190 "Little Giant" Jack Screw set, complete with all attachments "Little Giant" Jack Screws 190 2-1/4"–3-3/8"/57-85MM 191 1-1/2"–2-1/4"/38-57MM "Little Giant" Jack Screws are very handy for leveling work on planer beds,upright drills,setting up machinery,and for general use in the toolroom or machine shop. 190 and 191 have 20-pitch screws and for those who desire a finer adjustment, the F190 has a 40-pitch screw. An auxiliary pointed screw (D) is supplied, to be used in place of the screw with swivel cap. Extension base (E) is furnished for places where it is not possible to obtain a bearing on a flat surface. Extension V base (F) is for use against a cylindrical form. Collet Adapter Cat. No. EDP Description PT28314 68846 Collet Adapter 190 and 191 "Little Giant" Jack Screws Photo Key Cat. No. EDP Cat. No. EDP Description SF190 64622 Set complete, with fine-adjusting screw and all attachments S190 50680 S191 50687 Set complete with all attachments A F190A 64623 Jack only, with fine-adjusting screw 190A 50681 191A 50688 Jack only B 190B 50682 191B 50689 Extension base C 190C 50683 191C 50690 Extension base D F190D 64624 Auxiliary pointed screw with fine-adjusting screw 190D 50684 191D 50691 Auxiliary pointed screw E 190E 50685 191E 50692 Extension base F 190F 50686 191F 50693 Extension V base 190 Specifications Range Maximum Height with Attachments Jack (A) Base Diameter Extension (B) Extension (C) in mm in mm in mm in mm in mm 2-1/4 – 3-3/8 57-85 6-3/8" 162 1-1/4 32 2 50 1 25 191 Specifications Range Maximum Height with Attachments Jack (A) Base Diameter Extension (B) Extension (C) in mm in mm in mm in mm in mm 1-1/2 – 2-1/4 38-57 3-3/4 95 1 25 1 25 1/2 13 347 starrett.com P recision S hop T ools