Sold: Matrix Compound Sine Table
Sold: An used Matrix Compound Sine Table
Made by Matrix Tool and Gauge Coventry England
Diameter clamping surface: 9 inches
The hypotenuse is 5 inches
With the top of the table level in both planes the gage block height for each axis is 3.75 inches. To set the angle or angles you place a stack of gauge blocks under the two spherical pins.
The axis of the two small spherical locating points, located at 90 degrees to each other, pass through the centre point of the large ball segment. So as the large ball rotates the imaginary ball in the center and the two locating balls rotate also. Maintaining the strict 5 inch relationship to the two visible balls.