Demonstration Spherometer Subcategory_Weights and Masses the wider bore accepting full-size

the wider bore accepting full-size bar magnets while AC current drives the alternating field that rotates domains for demagnetization

and steel cubes machined to the same 1

Paired safety-socket outputs deliver two selectable ranges 0-70V and 0-125V DC at 300mA

Locking control at any extension on this two-meter retractable tape measure

the moderate curvature spreading light gently for divergence and virtual-image-formation work in refraction demos

Demonstration Spherometer Subcategory_Weights and Masses the wider bore accepting full-sizeDemonstration spherometer with an oversized 133 mm dial head and baked enamel finish, letting an entire classroom read spherometer values before students work with benchtop units.