A dial snap gauge, also known simply as a snap gauge, is a precision measuring instrument used in metrology (the science of measurement).
It is primarily employed to measure the outside diameter (OD) of cylindrical objects, such as shafts or rods.
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A dial snap gauge, also known simply as a snap gauge, is a precision measuring instrument used in metrology (the science of measurement). It is primarily employed to measure the outside diameter (OD) of cylindrical objects, such as shafts or rods. The term "snap" refers to the quick and easy action of placing the gauge around the object being measured and obtaining a reading.
The gauge consists of a frame with two anvils or jaws mounted at opposite ends. One of the anvils is fixed, while the other is adjustable. The movable anvil can be adjusted using a knob or screw mechanism to accommodate various sizes of work pieces. When the object to be measured is placed between the anvils, they are brought into contact with its surface.
A dial indicator, typically mounted on the frame of the gauge, displays the measurement. As the anvils make contact with the work piece, they cause the indicator to move, providing a visual or numerical reading of the object's diameter. The dial indicator is calibrated to provide accurate measurements within its specified range.
Dial snap gauges are widely used in manufacturing and quality control processes where precise measurements of cylindrical parts are required. They offer speed, simplicity, and accuracy, making them essential tools in industries such as automotive, aerospace, and machining.
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