This is an Ohmite # 2115, 0.312″ (7.94mm) Adjusting Ring for 5/16″ Diameter 12 Watt Variable Resistors.
This is the Sliding Adjustment Ring for Ohmite 210 Series, 12 Watt Resistors (or some other brands with a 5/16″ Diameter).
Features:
- Ring Diameter: 0.312″ (7.94mm)
- For Ohmite 12 Watt Dividohm® Variable Resistors