With YP Vernier, it is easy to learn how to use a
vernier to measure length with great precision. YP
Vernier simulates a vernier caliper on the screen.
Using a scroll bar, the user moves the movable
jaw, and the corresponding numerical valu e is
displayed on the screen. The program can also be
used in "quiz mode": the movable jaw is placed at
a random position, and the user try to find the
corresponding measure.

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