Density Set Polypropylene, Set of 12 Polypropylene cylindrical bars of different length but the same diameter. Students learn that the density of a substance is constant even as itsmass and volume change. Comes in an attractive wooden holder
Class 7 Economical Stainless Steel Cylindrical Weight, For rough weighing operations in physical and chemical laboratories, such as force measuring apparatus. 200g
Hooked Weight Set, Material: stainless steel, Both sets come with a sturdy plastic storage block, includes one each of 5g, 10g, 50g, 100g, and 500g, plus two each of 20g and 200g weights, one each 1000g weight, set of 10