Greyline Instruments, Measuring Instruments, models:

A.1.2 Series	User Manual
AVFM 5.0	User Manual
AVFM-II	User Manual
AVMS 5.1	User Manual
DFM 5.0	User Manual
DFM-IV	User Manual
MantaRay	User Manual
OCF 5.0	User Manual
PDFM 5.0	User Manual
PDFM 5.1	User Manual
PORTAFLOW PT500	User Manual
PTFM 1.0	User Manual
SFM 6.1	Installation & Operation Instructions
SLT 5.0	User Manual
SLT32	User Manual
TTFM 1.0	User Manual