CALIBRATED Keysight Agilent N7751A Optical Attenuator & Power Meter Opt. 021 SMF
Fully compatible with programs developed using the Keysight 8157x and 8156x modular attenuators. In good working condition. Radiation Monitors. Viavi JDSU OLA-55 Fiber Optical Level Attenuator 1260-1650 nm SM 2280/31 FC/PC.