4-Piece Premium Borosilicate 3.3 Glass Laboratory Flask and Beaker Shot Glass Set Subcategory_Entomology Supplies packaged with a keeper that

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

01 mm resolution

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

and three cast iron support rings for ring-stand assemblies

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 packaged with a keeper thatBuilt 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.