Premium Demonstration Dynamo with Hand Driver Type_Round End 250 ml Graduations

250 ml Graduations

packaged with a keeper that bridges the poles to keep the field intact between sessions

All-glass water still producing distilled water for laboratory use through a contamination-free path that eliminates metallic leaching from internal surfaces

and tin cylinders for matched-volume mass and density studies

Clear magnifier lid on this round viewer captures and enlarges small insects or specimens for elementary and middle school entomology observation

Premium Demonstration Dynamo with Hand Driver Type_Round End 250 ml GraduationsHand 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.