Gears and equipment racks make use of rotation to transmit torque, alter speeds, and change directions. Gears can be found in many different forms. Spur gears are simple, straight-toothed gears that operate parallel to the axis of rotation. Helical gears have got angled teeth that steadily engage matching tooth for smooth, quiet procedure. Bevel and miter gears are conical gears that operate at a right position and transfer movement between perpendicular shafts. Modify gears maintain a specific input speed and allow different output speeds. Gears are often paired with equipment racks, which are linear, toothed bars used in rack and pinion systems. The apparatus rotates to drive the rack’s linear motion. Gear racks offer more feedback than various other steering mechanisms.