The 1105 is a thermoset phenolic instrument knob designed for distinctive control and instrumentation applications. It features a diameter of 1 inch (A dimension) with a part height of 29/32 inch (C dimension), a hub diameter of 1/2 inch (D dimension), and an overall height of 27/32 inch (E dimension). The knob includes a 1/4" brass insert with set screw for secure mounting and shaft engagement. Manufactured from durable phenolic material with a glossy or satin finish, it provides excellent durability and an attractive appearance suitable for precision instruments and control panels. The line or slot indicator marking allows users to easily identify settings, making it ideal for laboratory equipment, medical devices, and industrial instrumentation where reliable, professional-grade control is required.