FM 100.02B Hydrostatic Pressure, Tilting Jar Quadrant
To measure moment caused by a fluid trust on a wholly or partially filled plane surface to be measured directly. This surface can be tilted. Clear acrylic hollow quadrant is hinged with ball bearings onto a fixed arm which coincides with the quadrant centre. A lever arm is also hinged on the same axis. The quadrant can be tilted by changing the lock pin position between the quadrant and the lever arm. At the other end of the lever arm is an adjustable counter weight. Depth scale and angular scale are indicated on the quadrant.Water admitted to the quadrant.