US$ 11.57
75-inch mouth on a 4 by 4 inch base
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
25 inch diameter
Designed to generate and detect ultrasonic waves above the audible range
Rocks and Volcanoes Teaching Model Subcategory_Stopwatches and Timers 75-inch mouth on a 4Depicts sedimentary, igneous, and metamorphic rocks alongside volcanic structures on a wall mountable labeled backboard, serving as a rock cycle and volcanism reference.
US$ 11.57
US$ 10.00
US$ 109.00
US$ 109.80
US$ 77.10