TY - RPRT TI - Report on an investigation of the operating characteristics of an NBS obturator-probe focus control in an ANAVQ-2A aircraft searchlight AU - LeReche, J A AU - Lane, J W, Sr PY - 1954 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 3176 DO - 10.6028/NBS.RPT.3176 ER -