Magnum 4" Fractional/SAE/Metric Digital Caliper

When you require exact measuring, you reach for a caliper. But an accurate measurement is meaningless if you can't read it accurately. This caliper takes an essential tool into the 21st century with a LCD digital readout for exact internal and outside measurements accurate to .001". Instantly converts among SAE, metric and fractions. The display can also be zeroed at any point on the slide. Features machine-grooved thumb-roll mechanism and position lock for sure adjustment.