How To Read Vernier Caliper In Mm Pdf

The vernier is a subsidiary scale replacing a single measured value pointer and has for instance ten divisions equal in distance to nine divisions on the main scale. The result is 15 divisions on the metric vernier and 8 divisions on the imperial vernier. The main scale is divided into 025 inch increments with inch and 100 inch increments marked with a suitable number.
how to read vernier caliper in mm pdf

Vernier scale wikipedia.

How to read vernier caliper in mm pdf. Basic vernier movement the illustration above shows a basic vernier movement as used on vernier calipers and other measuring and positioning tools. 002 millimeters is the caliper apreciation and is the minimun measure reading that this instrument can read it is representaing by a small division in the vernier scale that is each vernier scale division is equal to 002 millimeters or two hundredths of millimeter. Count how many divisions from 0 to the two lines of both main and vernier scale that line up. Textobtained reading textmain scale reading textvernier scale reading.

In this case the red line shows it is. You will need calipers or any measuring instrument with a vernier scale and an accuracy of 001 mm. This will give 21 cm 003 cm 213 cm. If your tool has one scale and a round dial instead see the dial caliper instructions instead.

The vernier calipers the vernier calipers found in the laboratory incorporates a main scale and a sliding vernier scale which allows readings to the nearest 0. Hence the vernier scale reading is 003 cm. Use the following formula. First move the slide to 75 mm on the large scale and then move the slide forward so the vernier scale reads 025.

So 15 x 005mm 0075 mm metric or 0inch imperial. In order to obtain the final measurement reading we will add the main scale reading and vernier scale reading together. How to read a vernier caliper sr sachin raghav nov mk mohammed kamil sep 12 check the scale of your smallest divisions. The vernier scale is divided into increments of 024 inch that represent 001 inch with each 005 inch numbered successively as.

If you are using a digital caliper the measurement should be displayed on an electronic screen typically with the option to switch between mm millimeters and inches in. Worksheet vernier calipers micrometer screw gauge 20 mm 20 mm mm 30 30 30 actual reading actual reading actual reading. The reading is 7. To use a vernier caliper start by twisting the locking screw counterclockwise to loosen it.

Use the instructions for vernier calipers if your tool has two scales one sliding over the other.