The MTKM07500500 is a multi-turn mechanical rotary knob from Omron. It is designed to provide a tactile and visual reference for the user when adjusting the setting of a device, such as a potentiometer. The knob is made from durable plastic with a matt black finish, giving it a classic and robust look. It features a large, easy-to-grip knob for easy operation, and has a 15-degree rotation angle with 50 turns of the knob for maximum precision. It features a single-wheel design to make it easier to monitor the setting of the knob in use. This product is also available with a 30-degree rotation angle, allowing for more finer adjustments.