Vanguard Instruments Company, Measuring Instruments, models:

ACCU-TRANS II Series	Operating Instructions Manual
ATO-400P	Operating Instructions Manual
ATRT-03	User Manual
CT-6500	Operating Instructions Manual
CT-6500 2 Series	Operating Instructions Manual
IRM-5000P	User Manual
RFD-200	Operating Instructions Manual
TRF-100	User Manual
WRM-10	User Manual
WRM-10P	User Manual