US$ 38.99
Excellent strength against breakage
and tin cylinders for matched-volume mass and density studies
packaged with a keeper that bridges the poles to keep the field intact between sessions
and strike-slip faults with clearly distinguished hanging-wall and footwall blocks for structural-geology lessons
coronary vessels
Premium Demonstration Dynamo with Hand Driver Type_Round End Excellent strength against breakageHand driven dynamo on an 8x5 inch base with a 125mm pulley belt coupled to the dynamo and 4mm output sockets, with an LED indicator and reversible operation as a 6 8V DC motor.
US$ 38.99
US$ 59.00
US$ 81.00
US$ 38.99