Class 11 Physics simulations · Units and Measurements

Micrometer screw gauge

Hold a real micrometer screw gauge: turn the thimble on the stage (drag up/down or sideways) until the spindle touches the object, then read the sleeve and thimble scales.

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What to notice

Use the ratchet (Close to contact) so the spindle presses the object gently; one full turn of the thimble moves the spindle by one pitch.

Key relation

Reading = PSR + n × LC (LC = pitch / 50) ; corrected = reading − zero error

Try this

Measure the copper wire with a 0.5 mm pitch, then add a zero error of +0.02 mm.

What you can change

• Object to measure: choose No object, Copper wire, Coin (thickness), Stack of paper, Glass bead
• Spindle opening (turn on stage): 0 to 25 mm
• Screw pitch: choose 0.5 mm, 1.0 mm
• Zero error: -0.05 to 0.05 mm

More in Units and Measurements

• Dimensional analysis of a pendulum
• Propagating errors: density of a cube
• Parallax: view from the right angle
• Spherometer
• Measurement uncertainty
• Vernier caliper

See all Class 11 Physics simulations or every Physica simulation.