4-Piece Premium Borosilicate 3.3 Glass Laboratory Flask and Beaker Shot Glass Set Subcategory_Entomology Supplies Hand-cranked pulley steps up to

Hand-cranked pulley steps up to a smaller dynamo pulley through a rubber belt

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

Converts flowing-water kinetic energy into electricity through a mini water turbine coupled to a dynamo

brake pedal switch

Improved Wimshurst electrostatic generator with two counter-rotating sectored discs that build high voltages through electrostatic induction for spark-gap demonstrations

4-Piece Premium Borosilicate 3.3 Glass Laboratory Flask and Beaker Shot Glass Set Subcategory_Entomology Supplies Hand-cranked pulley steps up toBuilt for chemistry themed entertaining, this 4 piece borosilicate 3. 3 glass set combines flask shape and beaker shape shot glasses in one laboratory quality collection.