How To Use A Vernier Micrometer Calipers PDF

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Procedure On How To Use A Vernier Caliper

This is a diagram of the vernier caliper.

Step 1: Open the jaws of the caliper and position the object on both sides of the piece you are measuring.

Step 2: Push the jaws firmly against the work piece.

Step 3: Lock the clamp screw so that the jaws don't move, and make your reading.

Step 4: Find the last value on the main scale before the zero line on the vernier scale.

Step 5: Next,find the first line on the vernier scale,that lines up perfectly with a line on the main scale.Then,combine both readings.

Procedure On How To Use A Micrometer Caliper

Step 1: Take the Measurement

1. Place your part between the measuring faces. 2. Bring the measuring face towards the part by rotating the spindle. 3. When you are close use rachet to press the measuring face against the part. You should achieve sufficient measuring force by rotating the rachet two or three times around. 4. Now you can lock the dimension using the locking nut.

Step 2: Reading the Linear Graduation

Read the linear graduation. :) The number of lines on the top of the horizontal zero line tells you the millimeters. We can see 4 lines for this measurement. Meaning our measurement is over 4 mm. Lines under the horizontal zero line show us the half-millimeters. When you can not see the half-millimeter line it means that your dimension is between 4.0 and 4.5 mm. If we can see the half mm line, it means that the dimension is between 4.5 and 5 mm.

Step 3: Reading the Thimble Graduation

This graduation shows you the tenths and hundreds of a millimeter. It is divided into 50 graduations. There fore each graduation equals 0.01 mm. We will simply have a look at which graduation lines up with the horizontal zero line. For this part, we can see that the number is 29. Because we can not see the half-millimeter line we just add this number to 4.0 mm. Therefore our final dimension is 4.29 mm. If on the other hand, we could see the half mm line, we would add this number to 4.5 mm and the result would be 4.79 mm.

Step 4: Final Reading the micrometer can be tricky when you are not used to it. To mitigate any reading error, it is helpful to take a rougher measurement with calipers first to see what dimension you are aiming for....