It is a class room demonstration kit for qualitative investigation of nature of mass
and making students understand distinction between mass and weight.
Kit comprises two metal trays 130 x 50 mm
held 200
mm apart approximately on spring steel strips attached to the sides. One tray has holes to take three equal
mass cylinders
approximately (L x D) 100 x 25 mm each. The other tray acts as anchor and may be clamped to the bench
either horizontally or
vertically. Three support pins are supplied to fit radial holes in cylinders. Supplied
complete with G clamp for mounting.