Pocket Compass with Cover Science Classroom An 18mm pole gap on

An 18mm pole gap on this 37 x 13 x 10mm Alnico U-shape concentrates field strongly enough to bend filings into clear field lines

Thirty-two-inch advanced pulley demonstration set with 8 singles

this premium power supply drives atomic emission demonstrations that reveal each element's characteristic spectral lines

This is chromium wire that can be used in many applications in the classroom or lab

accepting vertical support rods up to 5/8 inch on standard laboratory stands

Pocket Compass with Cover Science Classroom An 18mm pole gap onHinged cover pocket compass with a 45mm dial graduated in degrees and a needle lock, built to travel between fieldwork sites without damage.