Penny Head Solid Cone Stopper, 24/29, Borosilicate Glass Diameter_200mm and connecting leads mounted on

and connecting leads mounted on 4mm-socketed bases for building circuits from 40-plus components

Pairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block

equipping a class for fixed-and-movable pulley investigations

this bottle of coarse 20-mesh iron filings is a staple for classroom magnetism and field-pattern demonstrations

Stackable grid base on this polypropylene test tube rack holds 60 tubes up to 16 mm across a 9

Penny Head Solid Cone Stopper, 24/29, Borosilicate Glass Diameter_200mm and connecting leads mounted onPenny head solid cone stopper in borosilicate glass features 24 29 cone for sealing ground joint vessels with finger grip top design.