LISTING IS FOR ONE PC Knob Gray with Bar - Tektronix Part # 366204103 .

Dimensions 

Overall Height = 12mm Outside Diameter bottom = 10mm Outside Diameter Top = 9.1 mm Inside Diameter = 7mm

This is the knob used in ALL 2400 Series Oscilloscopes ( Intensity - Focus ) 

2445, 2445A, 2465, 2465A, 2445B, 2455B, 2465B 2467, 2467B