Best Buy Starrett 75B-6 "Fay" Spring-Type Outside Caliper With Heavy Square Legs And Quick-Spring Nut, 6" Size On Sale

Starrett 75B-6 "Fay" Spring-Type Outside Caliper With Heavy Square Legs And Quick-Spring Nut, 6" Size Specification

• Threads of the spring nut engage with pressure and release when pressure is withdrawn, to save time in opening and closing
• Bow spring is flexible yet strong to ensure reliable measurements
• Legs made of square stock for heavy-duty use
• Hardened fulcrum stud to help prevent give and loss of measurement
• Curved tips to transfer the measurement of the external size of an object

Starrett 75B-6 "Fay" Spring-Type Outside Caliper With Heavy Square Legs And Quick-Spring Nut, 6" Size Overview

The Starrett 75B-6 “Fay” spring-type outside caliper opens to 6” (150 mm) with very rugged construction. The threads of the spring nut firmly engage the screw with pressure from the leg. When pressure is withdrawn, the nut automatically releases itself and slides freely over the screw, saving time in opening and closing. The legs are made of heavy square stock, machined to a smooth taper, for accurate transfer of measurements of the external size of an object.

This caliper has heavy, square, inwardly curving legs for outside measurements and comes with a spring nut. Bow spring is flexible yet exceedingly strong, for reliability. The durable legs are made of flat stock, high-grade steel for long life. The centrally located adjustment rod ensures smooth action when opening and closing the caliper. The hardened fulcrum stud is strong to help prevent give or play in the measurement, and ensure better accuracy.

Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, machining, manufacturing, carpentry, and medicine. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The dial caliper is used also for measuring size differential between two objects. The digital caliper takes the same sort of differential measurements as the dial caliper by zeroing the display at any point along the slide, with an LCD (replacing the dial) that displays a single, easily read value in both English and metric units. Some digital calipers can hold data readings between measurements and send them to data collection devices.

The L. S. Starrett Company was founded in 1880, originally manufacturing bench vises, squares, and other tools. They acquired other companies throughout the years, expanding their services into making precision measurement instruments and tools, such as calipers, micrometers, saw blades, and gauges. Starrett is headquartered in Athol, Massachusetts and has manufacturing facilities in Brazil, the United Kingdom, China, and other locations.

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