US$ 36.00
combining protective gripping with angular adjustment on one piece
Insulated 10
Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur
and mammalian organ systems for comparative vertebrate teaching
sized so the heavier D cell stays seated when student-built circuits are picked up
Battery Box, Model C Capacity_50mL combining protective gripping with angularUsed to enclose dry cells safely for student built circuits, this battery box adds insulated terminals and prevents short circuits from rolling cells touching exposed lab metalwork.