Is it a NC57 Tuning Meter??? as shown at

http://www.io.com/~nielw/nat_list/SM57.HTM

Lionel VK4NS

Byron Tatum wrote:
Hello-
I have a small qty. of NOS National Company S-meters from an old CB
shop. I
can furnish a JPEG on request, should have a few extra to sell. Can someone
help me in using these meters : The pointer resides at full scale, rather
than at the low scale as most meters. I guess you would say the meter
pointer is
"backwards", however the meter scale is normal { not "backwards"}. How would
you compensate for this in S-meter circuit?
Thanks, Byron, WA5THJ