Vacuum Pump Plate on Aluminum Base with Rubber Seal, 10" Diameter Entomology & Zoology_Zoology Models suited to fieldwork in geography

suited to fieldwork in geography units and orientation activities outside the classroom

Meker-style natural gas burner delivers a broad

sized for short-time-constant RC charging investigations and demonstrations of energy stored as half-CV-squared

this microphone amplifier connects a microphone input to both an integrated speaker and an oscilloscope-driving amplified signal for waveform study

9 x 4 x 4 inch base

Vacuum Pump Plate on Aluminum Base with Rubber Seal, 10" Diameter Entomology & Zoology_Zoology Models suited to fieldwork in geography10 inch vacuum pump plate on an aluminum base with a stopcock and rubber seal, sized to accept a bell jar for atmospheric pressure and vacuum demonstrations.