1A20.41 vernier calipers 6-1 Use commercial large scale verniers to show how they work. Also mentions large coordinate systems. 1A20.41 vernier calipers, etc M-1b Demonstration versions of the micrometer and vernier calipers. M-1c A slide rule and vernier scale made of clear plastic for use on the overhead projector. A small heavy weight and a slightly lighter large wood block are passed around the class.
Students judge weight of a white lead filled ping pong ball and a chunk of black foam.
1A20.55 statistics on OH 6-1.1 Transparent Lucite probability board for the OH projector. Construction details in the Appendix, p. 533. Push the stop button when the hand shows. A large stop clock is covered by a disc with one quadrant cut out. Stop the clock as soon as you see the hand emerge.