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The Fowler Internal Electronic Caliper Gage measures inside dimensions (ID) with 0.0008"/0.02mm accuracy and.0005"/0.01mm resolution, and has a digital, single-value readout LCD, absolute and incremental modes, and RS-232 output. This caliper measures ID for hole diameters and groove and tube thicknesses. The digital, single-value readout LCD shows inch and metric units for versatility when measuring. The unit offers absolute and incremental modes for taking intermediate or differential measurements and stores a preset reference for comparing measurements. The caliper is spring-loaded in the measuring direction for a consistent measuring force and improved measurement repeatability. A thumb lever retracts the movable point. This caliper can output data via direct RS-232 for capturing and recording data. The caliper has a 2"/5cm diameter plastic electronic housing, steel arms, and hardened steel contact point for durability. The caliper uses a 3V CR2032 battery (included). It also comes with an aluminum case with foam inserts to cushion the instrument.

Digital 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 reading is electronically generated and displayed on a digital, high-resolution screen as a single value. Digital calipers can take differential measurements that are used to determine the difference in measurements between two objects, by zeroing the display at any point along the scale. Some digital calipers can switch between standard and metric units, and some can output readings to a computer or printer for recording measurements. Caliper gages are used in production settings where specific diametrical or thickness measurements must be repeated frequently with precision and accuracy. Compared to dial calipers, digital calipers provide measurements that are faster, easier, and more error-free, but they are more fragile mechanically and electronically, and do not resist coolant well. Vernier calipers are more durable than digital calipers because they do not have internal moving parts, but they can be more difficult to read. Digital calipers are commonly used in fields such as metalworking, mechanical engineering, machining, carpentry, and medicine.

The Fred V. Fowler Company manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages, and digital scales. The company, founded in 1946, is headquartered in Newton, MA.

What’s in the Box?

• Fowler internal electronic caliper gage
• 3V CR2032 battery
• Aluminum case