A 30cm polished aluminum top is mounted on heavy aluminum casting and bears a full 360° scale. The interior of the disk has a coordinate grid for reading sines and cosines of the angles directly. The disk mount permits it to be used horizontally or vertically; it can also be rotated around its center so the X axis can take any angle from 0 to 90°. The four pulleys come on swivel brackets that clamp on the central 13mm support rod; they move freely through a full 360° with the table in either position. Comes with support rod and heavy tripod base with leveling screws. Also included are four pulleys with brackets, four weight hangers with cords, a central ring and pin, and complete instructions. You will also need enough slotted weights to create any given weight up to 300g.
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