This device is a 1 Megaohm ½ Watt linear potentiometer.
ELECTRICAL SPECIFICATIONS: MECHANICAL SPECIFICATIONS:
Resistance, linear taper:  1 Meg Ω                                                         Mechanical rotation: 295°
 Power rating: 0.5 watts at 70°C                                                             Operating torque: 0.5 oz/in to 6 oz/in
 Resistance tolerance: ±10%                                                                    Rotational life: 25,000 cycles
 Operating voltage: 350 V                                                                         Washer & nut supplied.
 
    
             
  
 