Demonstration Meter with Changeable Interscapes Experiment kit It features completely new content

It features completely new content

Bell (Vacuum) Jar with stand base and with Electric Bell

Easy-to-rotate knobs help provide extra leverage to easy and accurate adjustment

is mounted on an insulating support rod with a stable base

Literacy practice for phase 2 of the letters and sounds program

Demonstration Meter with Changeable Interscapes Experiment kit It features completely new contentA versatile instrument and demonstration meter that can be converted to an A. C., or D. C. voltmeter or ammeter with selection of various ranges for each mode. With a high quality moving coil, spring controlled movement with full scale deflection of 5 mA or 100 mV D. C. The long pointer has a spade end and is clearly visible from a distance. Fitted in case with glass front and back. The instrument can be used with different dials to give different