Earthquake Teaching Model Botany_Botany Charts & Models with adjustable slit and draw-out

with adjustable slit and draw-out focusing for examining the spectral composition of light sources

Large-format 150mm convex glass mirror at 150mm focal length and ~5mm thickness

supplying two voltmeter scales on one accessory so students switch between low and mid-cell voltages without rewiring

running battery-free for repeatable classroom and stockroom use

a 6V buzzer

Earthquake Teaching Model Botany_Botany Charts & Models with adjustable slit and draw-outDepicts fault origins, seismic wave propagation, and surface effects on a hand painted wall mountable backboard, each wave type individually labeled for geophysics reference.