Fowler 52-008-005 0-6x22 Dial Caliper - Black

The Fowler One-Rev stainless steel dial calliper has dial graduations of 0cm with 0cm accuracy, a sliding jaw with a lock, and a covered rack. The knurled lock screw holds the sliding jaw in position and helps ensure a consistent measurement. A covered rack prevents dirt and debris from clogging the gear, and helps prevent measurement errors. A thumb-operated fine adjustment roller allows for one-handed use. This calliper is used for measuring inside dimensions (ID), outside dimensions (OD), depth, and step. The calliper measures 0.3cm per revolution of the dial. The dial has 0cm graduations, and the beam has engraved 0.3cm graduations. The hardened stainless steel components, including the bar, measuring surfaces, rack, gears, and depth rod, offer corrosion resistance, increased accuracy, and long life. Self-contained movement eliminates gear misalignment, while the dual pinion drive mechanism reduces wear on the rack and pinion. An adjustable dial enables setting zero. Spring anti-backlash control offers increased accuracy over standard gear configurations. Backlash is the amount of clearance between mated gear teeth in the calliper controls that prevents the gear teeth from jamming. It is undesirable to have much backlash due to the lack of precision offered by the increased amount of play between gears. Certain gear designs can minimise or eliminate backlash; spring anti-backlash systems use a spring to add a compressive force, thereby minimising backlash. The hardened stainless steel is polished to a satin chrome finish, to help prevent glare. This calliper comes with a fitted case. Dial callipers 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 measure inside, outside, and step measurements in standard or metric units. 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 to take measurements. A circular dial indicator is fixed to the movable jaw on a toothed gear rack that transfers movement of the jaws to the dial needle. The base measurement is taken from the long beam, which provides the initial whole measurement in inches or centimetres, and added to the dial reading, which provides fractional measurements in inches or millimetres. A locking mechanism provides the ability to take differential measurements for determining the difference in measurements between two objects. Compared to digital callipers, dial callipers are more durable, but are more susceptible to shock damage and prone to getting dirt in the gears, which can cause accuracy problems. Vernier callipers are more durable than dial callipers because they do not have internal moving parts, but they can be more difficult to read. Dial callipers 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, callipers, bore gauges, and digital scales. The company, founded in 1946, is