Digital Calipers and Mechanical Dial Calipers—Which One You Will Choose?
by Sophia on Nov.26, 2009, under Electronics, Other Subject
Mechanical dial calipers and electronic digital calipers can have similar high precision and accuracy. Depending on the model, both types can reach 0.01mm or 0.0005 inch resolution, with 0.02mm or 0.001 inch accuracy. The difference between the two types is more a matter of robustness versus ease of use.
Digital calipers have the same mechanical requirements as dial calipers:
· Measuring edges should be straight and meet precisely without any visible gaps.
· The rail should be straight and the jaws should slide smoothly without being loose.
· A thumb roller fine adjustment allows precise closing of the jaws.
· A locking screw stops the jaws from moving.
Measuring edges and bars to support the following measurements are standard:
· Internal dimension.
· External dimension.
· Depth.
· Step height.
The basic accuracy of digital and mechanical calipers is about the same. Digital calipers are easy to read and can easily convert between measurement systems. They are a good choice for engineers, mechanics and technicians who are careful with their tools and don’t mind changing batteries every few months.
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