PASCAL'S LAW APPARATUS (WEINHOLD'S) (0032) Comprising a base with aperture on the underside and on top of which may be attached anyone of the set of 4 glass vases having different shapes / sizes but identical bottom openings. A lever arm pivoted to the vertical support rod has a pressure disc on one end to close the aperture and a counterpoise pan. A vertically adjustable index pointer provided for adjusting liquid level in the vases. Complete apparatus mounted on a stable base. Qty :