3-in-1 Weather Station, 5.12" Diameter Item Type_Springs and the alternator principle with

and the alternator principle with stationary inductors

Four-point-five-ohm 9A standard rheostat with constantan winding on a vitreous-enameled steel tube

5-inch height including hook for spring-scale suspension

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

700-microfarad electrolytic capacitor module with 4mm sockets

3-in-1 Weather Station, 5.12" Diameter Item Type_Springs and the alternator principle withThree in one weather station on a 5. 12 inch analog dial combining a thermometer, barometer, and hygrometer in a single classroom scale unit for monitoring room conditions at a glance.