Fowler52-057-004-0, Pocket-Size Vernier Caliper With 0-4" Measuring Range

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The Fowler 52-057-004 stainless steel mini vernier pocket caliper has an inch scale, a 4" measuring range, and a 0.001" graduation for measuring the inside diameter (ID) and outside diameter (OD) of holes, grooves, and tube thicknesses, and depth measurements of bores and grooves. Stainless steel construction provides durability and wear resistance, and sharp black graduations on a satin-finished bar ease reading. A locking screw secures the measurement tightly in place for accurate reading. The caliper includes a pocket-size fitted case. Vernier calipers are measuring instruments commonly used for inspection in manufacturing to provide the precise measurements of an object. A pair of jaws attached to a long beam with a marked scale is used to take inside, outside, and step measurements. An additional depth probe slides along the beam to take depth measurements. One jaw is fixed to the end of the scale, while the other jaw slides along it with gearless precision to take measurements. The main scale is engraved directly on the beam while the vernier scale is engraved on the slider mechanism. The base measurement is taken from the long beam, which provides the initial whole measurement in inches, centimeters, or millimeters. To obtain the total measurement, the base reading is added to the vernier scale reading, which provides fractional measurements in inches or millimeters. A locking mechanism provides the ability to take differential measurements for determining the difference in measurements between two objects. Compared to digital and dial calipers, vernier calipers are more durable because they do not have internal moving parts, and are less prone to inaccuracy caused by shock, debris, and other contaminants, but they can be more difficult to read than digital and dial calipers. Vernier calipers are commonly used in fields such as metalworking, mechanical engineering, machining, and carpentry. The Fred V. Fowler Company manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gauges, and digital scales. The company, founded in 1946, is headquartered in Newton, MA. What's in the Box? ------------------ * Fowler 52-057-004 mini vernier caliper * Fitted case