This is a 14 slide powerpoint about reading a Vernier caliper.
There is one example that explains how to read the 2 scales. There is another example with the real picture of a caliper. (a little blurry)
There are 8 examples with a blown up scale that is much easier to read and point to.
The free preview file is a pdf of all 14 slides. Be sure to check it to see if MY calipers are like yours! Some have additional lines on the Vernier scale.
It would be easy to duplicate and alter the slides to make more examples or a quiz.