Engineering instruments, These Buoyancy Balances useful to find out specific gravity, apparent specific gravity and water absorption of aggregate and density of hardened concrete. Consists of an iron angle frame covered of M.S. sheets and front door made from see through acrylic sheet. An Electronic Table Top Balance with having an arrangement to suspend Density Basket or Concrete Cube. A watertight container is provided on a mechanical pedestal jack arrangement, which is fixed inside the frame.