This page contains a downloadable PDF file of the entire SCR-211 manual, which covers all models of the BC-221 Frequency meter. There are also other files here that will work with both the BC-221 and LM frequency meters.
1) The entire TM-11-300 for the SCR-211 in PDF format.
2) Two programs that will generate calibration books for those LM or BC-221 Frequency Meters lacking one. Go here, then choose the program you need. There is also an MS-Word file that will tell you how to use the programs, and a shorter text file about who wrote the programs. We also include PD copies of GZIP and PKUNZIP.