Description

Stanley digital vernier caliper 0-150mm
The vernier caliper is a measuring tool for measuring the length, the inner and outer diameter, and the depth. The vernier caliper consists of a main ruler and a vernier attached to the main ruler. The main ruler is usually in millimeters, while the cursor has 10, 20 or 50 compartments. According to the different compartments, the vernier caliper can be divided into a ten-degree vernier caliper, a twenty-degree vernier caliper, and a fifty-degree vernier caliper. The cursor has 9mm for 10 divisions, 19mm for 20 divisions, and 49mm for 50 divisions. The vernier caliper has two movable jaws on the main ruler and the vernier, the inner measuring claw and the outer measuring claw. The inner measuring claw is usually used to measure the inner diameter, and the outer measuring claw is usually used to measure the length and the outer diameter.
The vernier caliper is a measuring tool for measuring the length, the inner and outer diameter, and the depth. The vernier caliper consists of a main ruler and a vernier attached to the main ruler. If viewed from the back, the cursor is a whole. The main ruler is usually in millimeters, while the cursor has 10, 20 or 50 compartments. Depending on the compartment, the vernier caliper can be divided into a ten-degree vernier caliper, a two-degree vernier caliper, and a fifty-degree vernier caliper. The vernier caliper has two movable jaws on the main ruler and the vernier, the inner measuring claw and the outer measuring claw. The inner measuring claw is usually used to measure the inner diameter, and the outer measuring claw is usually used to measure the length and the outer diameter. The depth gauge is attached to the vernier scale to measure the depth of the groove and the barrel.
In a wide variety of measuring instruments, vernier calipers are widely used as high-precision measuring tools, which are extensions and extensions of scribe lines.
The vernier caliper is a commonly used measuring instrument in the industry. It consists of a ruler and a cursor that slides on the ruler, as shown in Figure 2.3-1. If viewed from the back, the cursor is a whole. There is a spring piece between the cursor and the ruler (not shown in the figure), and the spring force of the spring piece is used to make the cursor close to the ruler. The upper part of the cursor has a fastening screw that secures the cursor to any position on the ruler. Both the ruler and the cursor have a claw. The inner measuring jaw can measure the width of the groove and the inner diameter of the tube. The outer measuring jaw can measure the thickness of the part and the outer diameter of the tube. The depth gauge is attached to the vernier scale to measure the depth of the groove and the barrel.
There are scales on the ruler and the vernier scale. For example, a vernier caliper accurate to 0.1 mm has a minimum graduation of 1 mm on the ruler and 10 small aliquots on the vernier scale. The total length is 9 mm, and each division is 0.9 mm, which is the smallest on the main ruler. The divisions differ by 0.1 mm. When the claws are close together, the ruler body is aligned with the zero mark line of the cursor. Their first scale lines differ by 0.1 mm, and the second scale line differs by 0.2 mm. …, the 10th scale line differs by 1 mm, that is, the cursor number The 10 tick marks are aligned with the 9 mm tick marks of the main ruler.
When the linearity of the object between the equivalent claws is 0.1 mm, the vernier should move 0.1 mm to the right. At this point its first tick marks exactly align with the 1 mm tick mark of the ruler. Similarly, when the fifth tick mark of the cursor is aligned with the 5 mm tick mark of the ruler, it means that there is a width of 0.5 mm between the two claws, …, and so on.
When measuring a length greater than 1 mm, the entire number of millimeters is read from the scale line of the cursor “0” line opposite the ruler.
After the vernier caliper is used, wipe it off with cotton yarn. If it is not used for a long time, it should be rubbed with butter or oil. The two claws should be closed and tightened and tightened into the caliper box.