Micrometer

How to Use This Applet

The Graph Area

  • Drag the drum/ratchet of the caliper left or right to make gross adjustments to the spread of the jaws of the caliper.

<DOWN>/<UP> Arrow Keys

  • Use the <DOWN> and <UP> arrow keys to make fine adjustments to the spread of the jaws of the caliper [ 0.001 mm ].
  • Use the <SHIFT>+<DOWN> and <SHIFT>+<UP> arrow keys to make fine adjustments to the spread of the jaws of the caliper [ 0.002 mm ].
  • Use the <CTRL>+<DOWN> and <CTRL>+<UP> arrow keys to make fine adjustments to the spread of the jaws of the caliper [ 0.010 mm ].

<LEFT>/<RIGHT> Arrow Keys

  • Use the <LEFT> and <RIGHT> arrow keys to make medium adjustments to the spread of the jaws of the caliper [ 0.050 mm ].
  • Use the <SHIFT>+<LEFT> and <SHIFT>+<RIGHT> arrow keys to make medium adjustments to the spread of the jaws of the caliper [ 0.100 mm ].
  • Use the <CTRL>+<LEFT> and <CTRL>+<RIGHT> arrow keys to make medium adjustments to the spread of the jaws of the caliper [ 1.000 mm ].

If the arrow keys don't respond, click the cursor in the applet frame then try again.

Other

  • Use the "RESET" button to restore the applet to the initial state.

Notes

The normal screen resolution is set to 72 dots per inch. Assuming that 1 in = 2.54 cm, one centimeter would be 3600/127 dots, approximately 28 dots, in length. For the caliper applet to work properly on the screen, the visual scale must be larger. As a result, lengths will not look accurate. This applet will still promote the concept of reading Micrometer calipers, even if lengths are larger than normal.

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