Starrett 73A-4 Solid Nut Inside Spring Calliper, Steel, Flat Leg, 0-4" Range

• Designed for Precision - Traditional calipers predate design in direct measurement that is increased in popularity, these tools became useful in transferring precise dimensions from the workpiece to the measuring instrument or to gage similar parts.
• Strongly Made - Calipers are well-finished and made from high-grade steel. The legs are durable and made of flat stock, while the fulcrum stud is hardened, and has a smooth bearing surface.
• Quick-Adjusting Spring Nut - The Starrett quick-adjusting automatic-closing spring nut is designed for making fast and positive adjustments that will securely hold any measurement.
• Variety of Sizes - All sizes are available with either spring nut or solid nut, 4-inch, 6-inch, 8-inch, and 12-inch. This makes it easy to find the size you need for the job at hand..Made from high-grade steel.Legs made of flat stock.Fulcrum stud is hardened.Satin chrome finish for ease of reading and resistance to rust
• International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
• Manufactured from a high-grade steel
• finished and furnished with a solid adjusting nut for fine setting.
• legs are flat, very durable and pivot on a hardened stud.

Product Description The Starrett 73A-4 “Yankee” spring-type inside calliper opens to 4” (100 mm) with sturdy construction and smooth action. It is made of flat stock, high-grade steel, for easily reproducible and accurate transfer of measurements of the internal size of an object. This calliper has flat, outward curving legs for inside measurements and comes with a solid nut. Bow spring is flexible yet 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 calliper. The hardened fulcrum stud is strong to help prevent give or play in the measurement, which would reduce accuracy. Callipers measure the distance between two opposing sides of an object. They make inside, outside, depth or step measurements, according to their type. Callipers are commonly used in architecture, metalworking, mechanical engineering, machining, manufacturing, carpentry and medicine. The simplest callipers have two legs to mark the two points and require a ruler to take the measurement. More complex callipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial and digital callipers 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 calliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial calliper 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 calliper is used also for measuring size differential between two objects. Box Contains 1 x Starrett 73A-4 Inside Callipers 100mm / 4in