Cheap large range vernier caliper measuring tool for sale, range 0-12"/ 0-300mm, can avoid error within 0.1mm. The keys are clear and the measuring claw fits closely. The 1.5V button battery has a long life and is suitable for large range measurement.
||Plastic digital vernier caliper
||0-300mm / 0-12"
||0.1mm / 0.004"
|Ruler body material
||PA66 high strength plastic
||1.5V button battery
Tips: How to read 0-12"/ 0-300mm vernier calipers?
Both the vernier caliper body and the vernier ruler have scales. Take a vernier caliper with an accuracy of 0.1 mm as an example: The smallest division on the ruler is 1 mm, and there are 10 small equal scales on the vernier, with a total length of 9 mm, and each division is 0.9 mm. The smallest division difference on the main ruler is 0.1 mm. When the measuring claws are close together, the ruler body and the zero scale line of the vernier are aligned, their first scale line differs by 0.1 mm, the second scale line differs by 0.2 mm, ...... , the 10th scale line differs by 1 mm. That is, the 10th scale line of the vernier is exactly aligned with the 9mm scale line of the main ruler. L = integer part + fractional part - zero error.