• To be used for finding the centre of pressure of a totally or partially submerged plane surface
• Allow students to measure the moment due to the fluid (hydrostatic) thrust on a fully or partially submerged plane
• The plane should work in either a vertical or inclined (angled) position
• The equipment should consist of a vertical panel that holds a clear plastic quadrant, to which students add water
• The quadrant should have engraved lines to help students keep the plane in a vertical or angled position
• The cylindrical sides of the quadrant should have their central axis coincidental with the moment measurement axis
• Students should be able to measure moment using weights suspended from a level arm
• A scale on the panel of the apparatus should show the head of water
• To level the apparatus, levelling feet and spirit (bubble) level should be integrated
• The equipment should include non-toxic water dye to help students see the water levels more clearly and a syringe for accurate addition or removal of small amounts of water
• Experimental capabilities : Studying the relationship between hydrostatic force and head of water for a fully and partially submerged vertical and inclined plane
• Comparison of actual and theoretical hydrostatic force on a fully or partially submerged plane for any given head of water
• Theoretical calculation of the position of centre of pressure on a fully or partially submerged plane

Technical parameters 

• Slotted weights : 100 x 10g
• Weight hanger : 2 off 10g each
• Required accessories : 500ml bottle of water coloring and syringe
• Quadrant dimensions : Inner radius 100 - 110mm, outer radius 200 - 210mm, breadth 75 - 80mm
• Moment arm radius should be : 200 - 220mm
• The quadrant should be made of clear perspex