For example: Agilent E4440A or Anritsu 68369
Test Equipment Products
Exfo FOA-322
FC ultra-low reflection: FC, FC (PC/SPC/UPC/APC), NEC-D3

Manufacturer: Exfo
Category: Adapters
Exfo FOA-328
DIN 47256 (LSA) ultra-low reflection: DIN 47256 (PC/APC)

Manufacturer: Exfo
Category: Adapters
Exfo FOA-340
Diamond HMS-0, HFS-3 (3.5 mm) ultra-low reflection

Manufacturer: Exfo
Category: Adapters
EIP Microwave 578
Microwave Source Locking Counter

Manufacturer: EIP Microwave
Category: Counters/Timers
EIP Microwave 578B
10 Hz - 26.5 GHz Source Locking Microwave Frequency Counter

Manufacturer: EIP Microwave
Category: Counters/Timers