Rotary potentiometers adjust resistance by rotating a shaft, while sliding potentiometers (faders) move a wiper along a linear track. Both produce the same electrical function but suit different mechanical and user-interface needs. Rotary controls are compact, panel-friendly and available in a wide range of shaft types, dust-proof seals and multi-turn configurations. They are ideal for knobs, trimmer adjustments and rotary position sensing. Sliding potentiometers give a visual indication of position and are commonly used in audio mixing consoles and lighting desks, where operators benefit from seeing the current setting at a glance. When choosing between the two, consider panel space, user interaction style, lifecycle requirements and environmental sealing. Jason Electronics offers both families with custom shaft, travel and resistance options through our OEM/ODM program.