The Mighty Mag test and dial indicator magnetic base is one of the most versatile and compact magnetic bases available. It has a rugged zinc diecast housing which contains a powerful high-quality magnetic assembly with 45 pounds of holding power. It is compact at 4-3/8” x 1” x 1-1/16”. It contains 6 mounting locations: three with 1/4-20 tapped holes, one 10-32 tapped hole, one 3/8” reamed home and one V-shaped hole that will accommodate rods or accessories from 1/8” to 5/16” in diameter. This compact magnetic base will accommodate most lathe of machine shop devices and ensure they stay on place for accurate measurements. You will never stop discovering uses and applications for a Mighty Mag. Proudly made in the USA. Kit comes with dial indicator with the following features: 1) Body is made of machined anodized aluminum and NOT plastic 2) Vertical lug back configuration 3) 1 inch of total travel with graduations in 0.0005 (that's half a thousandth) per line 4) Accuracy guaranteed to 0.001 per 1 inch of travel 5) Each indicator comes with inspection certificate 6) Spindle rack pinions and gear trains are made of high quality steel components ensuring long life 7) Does not come with plastic case.