Class 7 Economical Stainless Steel Cylindrical Weight, For rough weighing operations in physical and chemical laboratories, such as force measuring apparatus. 2g
Density Set - PVC, Set of 12 PVC bars of different length but the same diameter. Students learn that the density of a substance is constant even as its mass and volume change. Comes in an attractive wooden holder
Economical Stainless Steel Class 7 Weight Set with No Certificate, For rough weighing operations in physical and chemical laboratories, such as force measuring apparatus. 1g