P-117 is a dial plate designed for rotary switch control interfaces. It features a 30° switch angle with numbering from 1 to 10, providing precise incremental positioning for user selection. The plate has a diameter of 1.87 inches, making it suitable for compact panel-mounted applications. This dial plate is commonly used in instrumentation, audio equipment, and industrial control systems where reliable, indexed rotary selection is required. The standardized dimensions and numbering scheme ensure compatibility with standard rotary switch mechanisms.