This equipment allows the moment caused by a fluid thrust on a wholly or partially submerged plane surface to be measured directly. This surface can be tilted.

A PVC quadrant is hinged on a shaft pivoted on knife edges which coincide with the quadrant center. The quadrant position is adjustable relative to a balance arm such that the submerged plane surface can be tilted by changing the lock pin position. A depth scale is indicated on the quadrant. When the quadrant is immersed in water, there are hydrostatic forces.

The balance arm has an adjustable counter balance and weights with a hanger. The quadrant is mounted on top of a clear acrylic tank which allows water to be admitted and drained to required level by a valve. The tank rests on adjustable footings and a bull’s eye level is provided.

• Visual demonstration of the Shear Force and Bending Moment at a cut section in a beam
• Determination of the Centre of Pressure