Portable Digital Voltmeter, 0-20V DC Subcategory_Zoology Models Built for identification exercises

Built for identification exercises

Hundred-fourteen-piece organic chemistry molecular model set with 50 atoms and 64 links covering single

this 40-piece optical bench kit pairs an aluminum track and sliding holders with lamp

demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope

Single open-or-closed switch on a 4mm-terminal base

Portable Digital Voltmeter, 0-20V DC Subcategory_Zoology Models Built for identification exercisesBattery powered portable digital voltmeter measuring 0 20V DC at plus or minus 1 digit accuracy on a large LCD, sized to give student bench setups a direct numeric reading without analog parallax.