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The Fowler 52-240-013 large-capacity micrometer has a Vernier-scale with a 12 to 13" measuring range and a 0.295" diameter flat anvil/spindle pair for general purpose measuring of large workpieces. The Vernier scale has 0.001" graduation intervals for precise readings. The anvil/spindle pair have hardened, precision-ground, and micro-lapped measuring faces with 0.00003" flatness for accurate measurements. The positive locking lever 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 independent 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. A satin chrome finish on the thimble and sleeve helps reduce rust and glare, providing durability and long life, and microfine graduations help ensure accurate readings. The micrometer includes a standard, a wrench, and a fitted case.
SpecificationsDisplay type Vernier scale Anvil/spindle style Flat Measuring range 12 to 13" Graduation interval 0.001" Thimble style Ratchet Anvil/spindle diameter 0.295" Flatness 0.00003"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 52-240-013 micrometer
- Standard
- Wrench
- Fitted case