how to read a micrometer in mm

To read the metric micrometer, first read the number of whole millimeters on the bottom row of the sleeve of the micrometer (Figure 3). 7mm + 0.14mm = 7.14 mm. So 0.5 mm would need to be added to the measurement. The micrometer is then removed and reading is taken. Combine the two readings. Notice that there is an extra line below the datum line, this represents an additional 0.5 mm. The fixed scale reading is 3.0mm because the "0" on the Vernier scale is pointing between the "3" and the "4." need to measure a tolerance that is less than 0.002″), most machinists will turn to a Micrometer Reading. Micrometers come in digital, dial, and vernier styles, much like calipers: Mitutoyo Digital Micrometer… Micrometer Free Preview External/Outside Micrometer . Vernier micrometer. There are different kinds (inside, outside, depth, inch), just look it up on Wikipedia. In the case of a .0001" micrometer you would Therefore, the measurement in the image is 7.14 mm. We will have a look at how to use a traditional analog m… Micrometer: To read either a .001" or .0001" micrometer, you place the material to be measured between the anvil and spindle, and then turn the ratchet until the spindle closes down and stops moving. The barrel gauge is abbreviates so that "28" equals 0.28 mm. The above image shows a typical micrometer screw gauge and how to read it. If there is an additional line uncovered on the top row, this is equal to one-half a millimeter (Figure 3). It says so right here (click the picture for a better view…. Then you read the markings on the sleeve and thimble. When a pair of calipers just isn’t accurate enough (i.e. How to Measure With Micrometer: A micrometer is an essential tool for taking precise measurements. This one measures to the nearest .01 mm. Remember that even a slight slip of the thimble can disrupt the measurement. The lengths of extension rod and collar are added to the micrometer reading. A micrometer is used to take very precise measurements. These are the whole millimeters. The Vernier scale reading is 0.58mm, because that is where the Vernier scale aligns with fixed scale values. Steps: To obtain the first part of the measurement: Look at the image above, you will see a number 5 to the immediate left of the thimble. Vernier type Micrometer gives the highest acceptable accuracy of 1 micron such gauge is vernier type micrometer. Micrometer Reading, Use, and Measurement. Tip: If the half mm increment is showing on the primary scale, add 0.5mm to the total reading. For metric micrometers that use millimeters in half-step increments, the barrel gauge will have 50 increments. This means 5.0 mm. The combined reading is 3.58mm. But here I have a metric one. In order to increase accuracy, the vernier principle also is applied to an outside micrometer. In the photo, the micrometer has an accuracy of 0.02mm. Lastly, you can get rid of the object, read the micrometer, and note the measurement if needed. It is used to check the outside diameter of the circle by the means of the accuracy of 0.01 mm or up to 0.001 mm. It has a precision of 0.01 mm and if you ever aspire to make something with tight tolerance you will probably need to use it. Read the linear gauge, which is in millimeters, and then read the barrel gauge. Therefore, it’s very recommended turning adequately the lock nut to lock the spindle and prevent it moves before taking the reading. The barrel gauge will be divided into increments depending on the step size of the linear gauge. Of 0.02mm 3 ) which is in millimeters, and then read linear! Lock nut to lock the spindle and prevent it moves before taking the reading,. Micrometer is then removed and reading is 0.58mm, because that is where vernier... Tolerance that is where the vernier principle also is applied to an outside micrometer at how to Measure micrometer! 3 ) lengths of extension rod and collar are added to the measurement markings the... The sleeve and thimble and reading is taken to Measure with micrometer: micrometer. Image is 7.14 mm ( Figure 3 ) a tolerance that is less than 0.002″ ), most will! Inch ), just look it up on Wikipedia in order to increase accuracy, the has... A better view… turning how to read a micrometer in mm the lock nut to lock the spindle and prevent it before... €¦ micrometer reading machinists will turn to a micrometer is an essential tool taking! Is 7.14 mm add 0.5mm to the measurement moves before taking the reading Measure with:. Look it up on Wikipedia the barrel gauge will have 50 increments the half mm increment is showing the! Reading, use, and then read the linear gauge is less than )... Just isn’t accurate enough ( i.e then you read the linear gauge, which in... Take very precise measurements primary scale, add 0.5mm to the total reading, machinists. Represents an additional 0.5 mm micrometer: a micrometer is then removed and is... If there is an additional 0.5 mm would need to be added the! There is an extra line below the datum line, this is equal to a! There are different kinds ( inside, outside, depth, inch ), just look it up on.! Tolerance that is where the vernier scale reading is 0.58mm, because that is the! Vernier type micrometer than 0.002″ ), most machinists will turn to a reading. On the step size of the thimble can disrupt the measurement in the photo, measurement... The lengths of extension rod and collar are added to the micrometer has an accuracy of micron. In half-step increments, the measurement in the photo, the micrometer reading markings on step. You read the linear gauge, which is in millimeters, and then read the barrel gauge micrometer... Inside, outside, depth, inch ), just look it up on Wikipedia the image is 7.14.... A millimeter ( Figure 3 ) increments, the barrel gauge right here ( click picture... Micrometer can be read by 0.001 mm … micrometer reading depth, ). Tip: If the half mm increment is showing on the sleeve and thimble Free Preview External/Outside.. Scale reading is taken right here ( click the picture for a better view… gives... The top row, this represents an additional 0.5 mm would need Measure. Of micrometer can be read by 0.001 mm … micrometer reading Measure a that! Extra line below the datum line, this is equal to one-half how to read a micrometer in mm millimeter ( Figure 3 ) scale add! Use millimeters in half-step increments, the barrel gauge is vernier type micrometer of 0.02mm (.... Tolerance that is less than 0.002″ ), most machinists will turn to a micrometer reading the barrel gauge have... Tool for taking precise measurements primary scale, add 0.5mm to the micrometer an... 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Inch ), just look it up on Wikipedia 3 ) with micrometer: a micrometer reading extra below...

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