starrett 657aa magnetic base complete set with base upright post rod attachment

Description

Product Features
Starrett 657AA Magnetic Base Complete Set with Base Upright Post Rod Attachment and Two Snugs
Description:
Starrett 657AA Magnetic Base indicator holder is an all-inclusive kit for use with all Starrett test back-plunger dial AGD and miniature-dial indicators as well as similar indicators from other manufacturers The set includes a Starrett 657P magnetic base a 657G upright base post a 657S snug a 657X rod a 657Y indicator attachment and a PT18724 snug The 657P magnetic base is 1-15/16a?x 1-5/8a?x 1-7/8a?(50 x 40 x 48 mm) and has a push-button on/off switch for one-handed operation The base has three precision-ground magnetic points to grip horizontally vertiy and upside-down The V-step holds the base to arbors shafts and other cylindrical items The base has an additional 1/4-20 tapped hole on one side for mounting the post The magnetic base has a non-skid black wrinkle finish on all non-working surfaces The base post is 3/8a?(95 mm) in diameter and 7-7/16a?(190 mm) long The Starrett 57S and 58S snugs may also be used with this post (sold separately) The 657S snug has two 1/4a?(63-mm) diameter holes and adapts the 196 650 and 651 series dial indicators and the 657Y indicator attachment to the 657X rod The 657X rod is 1/4a?(63 mm) in diameter and 6a?(150 mm) long It accommodates the Starrett 708 709 811 and 711F series dial test indicators The 657Y indicator attachment has a 1/4a?(63-mm) outer diameter hole on one end while the other end is threaded to fit the backs of all AGD indicators (Starrett series 81 25 655 and 656) and series 80 miniature indicators The PT18724 snug has a 3/8a?(95 mm) diameter post hole and a 1/4a?(63-mm) diameter gripping hole to accommodate the 657X rod Magnetic bases are magnetic fixtures commonly used in metalworking to hold dial indicators and are also used in other fields such as optics Magnetic bases can assist the user with setting up a workpiece in a milling machine surface grinder or other machine tool The vertical post and rod in a magnetic base connect using swiveling connectors or snugs This allows free motion of the arm so that the dial indicator can be moved into position on the workpiece Many magnetic bases have a V-step which is a V-shaped ch in the base for holding the base to arbors shafts and other cylindrical items The magnetic base has a circular hole through the center A round permanent magnet is inserted into this hole and a handle or button is attached to allow the user to rotate the magnet Rotating the magnet turns the base on and off as this causes the position of the magnetic field to rotate as well In the on position the iron is acting as an extension of the magnet while in the off position the magnet is acting as a keeper preventing the magnetic field from extending through the base The L S Starrett Company was founded in 1880 originally manufacturing bench vises squares and other tools They acquired other companies throughout the years expanding their services into making precision measurement instruments and tools such as calipers micrometers saw blades and gauges Starrett is headquartered in Athol Massachusetts and has manufacturing facilities in Brazil the United Kingdom China and other locations Whatas in the Box No 657P Magnetic Base No 657G Upright Base Post No 657S Snug No 657X Rod No 657Y Indicator Attachment No PT18724 SnugStarrett 657AA Magnetic Base Complete Set with Base Upright Post Rod Attachment and Two Snugs
SKU:
EDIB00008IHTG
Specification
Model:Does not apply
Item Weight:2
Size:Does not apply
Item Dimensions:2.2x10.3x2.9
UPC:049659527438PROP 65 WARNING: This product can expose you to some kind of chemical, which is known to the State of California to cause cancer.