TY  - RPRT
TI  - A rack-mounted precision waveguide-below-cutoff attenuator with an absolute electronic readout 
AU  - Cook, Clarence C
PY  - 1974
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 74-394
DO  - 10.6028/NBS.IR.74-394
ER  -