To start using a micrometer, you need to get familiar with its features. Among the most important are the thimble, the stock, the spindle and the anvil.
Micrometer Basic Operations
Start by putting the object in between the spindle and the anvil. Turn the ratchet until the spindle comes across the object. Stop spinning the ratchet when you hear three clicks.
Check the spindle and anvil. They should be making contact with the object. Set the thimble lock. Make sure the micrometer is on the object. When it’s locked, take out the micrometer.
How to Read the Micrometer
The first number is whole (i.e., 2.). Examine the 100 thousandths mark. This will be on the stock (2.5). When using a micrometer, you should next look at the 25 thousandth markings. This will be adjacent to the 100 thousandths. In this case, it is after the 5.
Now you have to locate the number and marking at the thimble scale. It should be under the measurement line of the stock (20).
Now add the figure to the 25 thousandths. (In this case 20 plus 25). The total and the measurement is 2.545.
To get the ten thousandths marking, turn the micrometer over. Now look for the sign on the stock. This is inline with the mark on the thimble (4). The measurement is 2.454.
Other Information about Using a Micrometer
This device isn’t difficult to use. Over time you will get used to it. In the beginning, you should measure each piece repeatedly. This determines if your initial measurement was correct.
Keep in mind that a micrometer needs to be calibrated before it’s used. As a rule, the micrometer should be calibrated every 36 months. This rate of calibration is good enough even if the device is used often. However some devices can be calibrated more often.
Important Micrometer Tools
Two tools are used with a micrometer: the standard and the wrench. The standard is utilized to verify the accuracy of a micrometer. It can also be used to test the device if the results are wrong. When using a micrometer, you’ll definitely want to have this around.
The standard comes in two shapes, round or rectangular. They are made of steel. Standard can be used before the micrometer is utilized. They can also be employed for the regular calibration.
The wrench is also vital. It is used to modify the micrometer. It is plugged behind the stock. It’s only used if the micrometer needs any adjustments.
Purpose of the Micrometer
A micrometer can be used to measure objects down to the ten thousandths of an inch. It is used for cylindrical or spherical shapes.
The micrometer is sensitive to heat. For this reason it should be kept at room temperatures. The object to be read must also be stored at room temperature. Not doing so may produce an inaccurate reading.
Using a micrometer will be important if you work with engines and other devices. When exact measurements for small objects are needed, few devices can equal it.