HUGE RARE Vintage EMI photomultiplier tube 9835B 8" Diameter

0.5" Diameter x 3" Length x 8/32 Thread Optical Support Rod

0.5" Diameter x 4" Length x 8/32 Thread Optical Support Rod

0.5" Diameter x 4" Length x 8/32 Thread with Bored Hole Optical Support Rod

HunterLab SpectraProbe XE RS-232 Optical Isolator / Repeater

Eljen EJ-550 Silicone Optical Grease Photomultiplier Tube Mounting

E-250 Photomultiplier-?? Tube 2"-Diameter 14-Pin ***NOS-? Pls Read

Newport M-71 Metric Optical Support Rod