The Mitutoyo 536-161 tube thickness type vernier caliper takes tube wall thickness measurements between 0 and 150 mm, for applications requiring high levels of accuracy, especially in scientific research and in industries where parts must fit exactly. This caliper measures tubes or pipes with inside diameters greater than or equal to 3 mm.
The vernier caliper has a fixed (main) scale and a movable (vernier) scale. The vernier scale moves over the main scale rule to give a fractional measurement which is added to the measurement of the main scale to achieve a more accurate result. The main scale may be marked in inches, millimeters, or both. The vernier scale may be marked in inches or millimeters. A thumbwheel permits fast measuring, and a rotating screw controls the caliper’s movement.
The 536-161 measures in metric units. The vernier reading of the lower scale is 0.05 mm. The scales are raised to slide easily and protect the graduation markings. A thumbwheel permits fast and easy measuring. A clamping screw on the upper scale rotates to control scale movement and locks to hold the sliding jaw’s position. The caliper weighs 150g and is made of hardened stainless steel construction with a satin chrome finish. With its round bar main scale jaw and regular type vernier jaw, this caliper takes tube wall thickness measurements of tubes with inside diameters greater than or equal to 3 mm. The caliper has a main slide length of 229 mm, jaw depth of 40 mm, main scale jaw bar length of 32 mm, jaw bar diameter of 3, and a beam width of 16 mm. Range is 0 – 150 mm, resolution is 0.05 mm, and accuracy is rated at + or - 0.05 mm, which meets Federal Accuracy Specifications GGG-C-111B.
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 all 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 for measuring size differential between two objects, as well. 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.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
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