Ohmite's 5109E finger-grip knob with pointer is a crucial component for controlling rheostats and tap switches in industrial applications. This knob, designed for models H, J, G, K, and L, provides a secure and comfortable grip for precise adjustments. It's fastened to shafts using slotted set screws, ensuring a reliable connection. The pointer assists in visual tracking of the adjustment position, enhancing operational accuracy and control in various industrial settings.