What is a sinus board?

Sine board is an accurate production tool used to measure the angles of larger industrial buildings, usually car parts. The angles of these parts are usually difficult to measure due to their special or bulky shape. To measure the angle with this piece of devices, experts use sinus chart constants, breakup blocks and measuring tape. Remarkable types of this tool include a magnetic sinus plate and a folded sinus plate.

This device consists of two steel plates that lie parallel. These boards are supported by two metal sticks, which are located at the opposite ends of the boards. The bars keep the boards apart at the same distance. There are also two cylinders at each end and the distance between the centers of these cylinders is carefully recorded. This distance is used to measure the angle by acting as a hypothesis of a formulated triangle.

In the working settings, the bottom plate is attached to the work table, while the top plate is left suspended on one of the metal bars.Measuring blocks are then stacked between the lower plate and the second metal rod. The top plate is used to stabilize the object when measuring the object. It contains screw holes so that the object can be attached to it.

For the use of a sinus plate, the center distance of the tool and the angle to be measured must be determined. This is done by means of measuring tape. Furthermore, the sinus plate graph is used to determine the settings. The constant is based on the specified center distance, the desired angle and the scale of the thumb itself. Reference tables are easily found online that helps setting constant calculations.

4 The measuring blocks can be assembled to be equal to any height of 0,03 inches of up to 6 inches (0.08 centimeters to 15 centimeters). When the meters and an angle set are located, the tool is then locked to keep the device in place.

There are two important variations of this toole. The magnetic sinus plate uses magnets to more effectively hold stable pieces, ranging from thin leaves to large working pieces. Compound sinus plates are used to set compound angles for complex constructions that require angles in multiple planes.