Within calipers of use

Within calipers of use

Within the caliper measurement of internal diameter should be two clamp foot measuring surface line exactly perpendicular to the axis of the bore, two measuring surfaces of the clamp feet should be the end points of the bore diameter. Therefore, the measurement should be to stop the measurement surface of the clamp feet below the pore walls as a fulcrum, the clamp feet above entered, some gradually out to test the orifice slightly and swing along the circumferential direction of the hole wall, along the hole wall circumference direction can swing the distance for the most hours, said caliper foot two measuring surface in the inner hole diameter of the two end points.
Then the calipers to slowly move from the outside, you can test the roundness tolerance of the hole. Been in a steel ruler or outside calipers to take a good size inside caliper to measure the inside diameter.brake racing Is a comparison of calipers in the tightness of the hole parts. Hole has a larger swing freely within the caliper, said caliper size smaller than the aperture; such as within the calipers will not fit into, or into the hole after the tight swing freely, it means that within the caliper size than the aperture big, such as calipers into the hole, in accordance with the above-mentioned measurement method 1 ~ 2MM free-swinging distance, when the aperture with calipers size, just equal. Measurements by hand, do not grasp the caliper measurement, so the feel, difficult to compare the calipers in the tightness of the hole parts, and caliper distortion arising from measurement error.
Although the caliper is a simple measuring tools, as long as we have a good grasp also get a higher measurement accuracy. Outside calipers Comparison of two-axis diameter size is the shaft diameter difference of only 0.01MM experienced master craftsman also able to distinguish the draw. Another example is when the pore size within the caliper and the outer diameter percentile foot joint measurement, the experienced master craftsmen completely sure this method of measuring high-precision bore. Internal diameter measurement method, known as "slot and the percentage feet, using internal calipers read the exact percentage of feet on the outside diameter size, go to the inner diameter of the measuring parts; or stuck in the hole adjustment and hole the tightness of the contact, and then read in the percentage feet on the outside diameter of a specific size. This measurement not only in the lack of precision measuring of inside diameter is a good way of measuring the inner diameter, and, for certain parts of the inner diameter of difficulties due to its hole axis use precision internal diameter of calipers to take within the application percentile feet OD measurement of the diameter method, will be able to resolve.
The applicable range of calipers
The caliper is a simple measuring tools, because of its simple structure, easy fabrication, low cost, maintenance and easy to use features, widely used in the measurement and inspection of the size of the less demanding parts, especially the malleable pieces of rough size measurement and testing, the caliper is the most appropriate measurement tools.