Fowler 52-244-301-1 Digit Counter Ball-Anvil & Spindle Micrometer, 0-1″ Measuring Range, 0.00016″ Accuracy, 0.0001″ Graduation

Fowler 52-244-301-1 Digit Counter Ball-Anvil & Spindle Micrometer, 0-1″ Measuring Range, 0.00016″ Accuracy, 0.0001″ Graduation

$89.97 (as of September 9, 2018, 7:49 pm)

Outside micrometer with ball-style anvil/spindle pair and 0 to 1″ measuring range measures inside and outside diameters of sleeves, collars, tubing, and other curved and cylindrical surfaces
Digit display has 0.001″ graduation intervals and Vernier scale has 0.0001″ graduation intervals for precise readings, and accuracy of 0.00016″
Hardened and precision-ground anvil provides wear resistance

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Description

The Fowler 52-244-301-1 outside micrometer has a digit display with a secondary Vernier scale, a 0 to 1″ measuring range, and a ball anvil/spindle pair for measuring the inside and outside diameters of sleeves, collars, tubing, and other curved and cylindrical surfaces. The ball anvil and spindle contact the curve at a single point, providing accurate measurements. The digit display has a 0.001″ resolution and the secondary Vernier-scale has 0.0001″ graduations for precise readings. An overall accuracy of 0.00016″ provides accurate measurements. The ball-style anvil is hardened and precision-ground to provide wear resistance. The hardened, ground, and lapped spindle thread provides smooth movement, accuracy, and long life. The positive locking nut on the spindle locks measurements in place for accurate readings and the zero adjustment on the sleeve ensures accurate measurements. The ratchet-stop thimble can be used independently of the friction thimble. It provides an audible sound and stops the spindle from turning when the spindle comes into contact with the workpiece, providing constant force for consistent measurements between operators. The baked-enamel frame is heat-insulated to provide durability, long life, and resistance to temperature-related expansion and contraction. The micrometer includes a wrench and a fitted case.

Specifications
Display type Digit with Vernier scale
Anvil/spindle style Ball
Measuring range 0 to 1″
Graduation interval 0.001″ on digit counter, 0.0001″ on Vernier scale
Accuracy 0.00016″
Thimble style Ratchet stop
Anvil/spindle diameter 0.256″

Micrometers are precision measuring instruments that use a calibrated screw to measure distances. These measurements are translated into large rotations of the screw that are then able to be read from a scale or a dial. Micrometers are typically used in manufacturing, machining, and mechanical engineering. There are three types of micrometer: outside, inside, and depth. Outside micrometers may also be called micrometer calipers, and are used to measure the length, width, or outside diameter of an object. Inside micrometers are typically used to measure interior diameter, as in a hole. Depth micrometers measure the height, or depth, of any shape that has a step, groove, or slot.

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 52-244-301-1 ball anvil/spindle micrometer
  • Wrench
  • Fitted case

Outside micrometer with ball-style anvil/spindle pair and 0 to 1″ measuring range measures inside and outside diameters of sleeves, collars, tubing, and other curved and cylindrical surfaces
Digit display has 0.001″ graduation intervals and Vernier scale has 0.0001″ graduation intervals for precise readings, and accuracy of 0.00016″
Hardened and precision-ground anvil provides wear resistance
Hardened, ground and lapped spindle thread provides smooth movement, accuracy, and long life
Ratchet stop applies constant force for repeatability between users