NEW STARRETT SF190 Little Giant Jack Screw Set Complete, New in Box

Description

SF190 Little Giant Jack Screw Set Complete, with Fine-Adjusting Screw and All Attachments
Little Giant Jack Screws are used for leveling work on planer beds, drills, setting up machinery, and general use in toolrooms or machine shops. 190 Series are 2-1/4" to 3-3/8" / 57-85mm in Size. Series 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 is supplied, to be used in place of the screw with swivel cap. Another Extension base is furnished for places where it is not possible to obtain a bearing on a flat surface. Extension V base is for use against a cylindrical form.
FEATURES
40-pitch screw
Range : 2-1/4 - 3-3/8" / 57-85mm
Maximum Height with Attachments : 6-3/8" / 162mm
Jack Base Diameter : 1-1/4" / 32mm
2" / 50mm Extension
1" / 25mm Extension
Extension base is furnished for places where it is not possible to obtain a bearing on a flat surface.
Extension V base is for use against a cylindrical form.