Description
25 inch diameter
Higher-impedance single-decade resistance box stepping from 10k to 100k ohms in 10k-ohm increments
46mm copper wire on a 9mm soft-iron U-form core
Six 10 x 10cm unmounted plastic filter squares - red
Rocks and Volcanoes Teaching Model Subcategory_Stopwatches and Timers 25 inch diameterDepicts sedimentary, igneous, and metamorphic rocks alongside volcanic structures on a wall mountable labeled backboard, serving as a rock cycle and volcanism reference.
Exchange/Return Notes
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