Stanford Research SR400 Two-Channel Gated Photon Counter - For Parts/Repair

Photon Technology International (PTI) OC4000 / OC4000D Dual-Mode Optical Chopper

Photon Control Optical Mounting Flange – Cambridge, England Laboratory Optomech

Abbott TDX Laboratory Automated Fluorescence Polarization Analyzer

Stanford Research Systems SR400 Dual-Channel Gated Photon Counter 2 Channel

Stanford Research Systems SR400 Dual-Channel Gated Photon Counter

Stanford Research Systems SR400 Two Channel Gated Photon Counter dual

Photon Technology BeamScan Controller 1080 ...............................(OSSD)