L.S. Starrett 659P Magnetic Base Part# - 55949
Brand: L.S. STARRETT
Part Number: 55949
Weight: 0.4 lbs
Country of Origin: UNITED STATES
Minimum Order Qty: 1 EA
Features: V-shape magnetic base with 100- to 150-lb. holding strength for mounting dial indicators | On/off switch releases magnetic field for repositioning | V-shaped base attaches to flat surfaces or round surfaces up to 5"/125mm in diameter | Country of origin: United States
The Starrett 659P magnetic base is used to mount dial indicators for taking precise and repeatable measurements. The base has an on/off switch that releases the magnetic field when positioning the base. When turned on, the magnetic base has a holding power of 100 to 150 lb. The v-shaped base attaches to flat surfaces or round surfaces up to 5"/125mm in diameter. A threaded adapter on the base makes it possible to use Starrett Series 657 magnetic base posts and attachments.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 notch 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 manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA.
