[Amps] Meter Shunts

[Ed]

I want to get away from the low value hand-made meter shunts. I plan on 
using the meter (a 0-1 ma) as a voltmeter to measure the drop across 
more standard values of resistance. Knowing that my Ohms Law is a little 
   rusty, I am looking for some re-assurance that I'm right. The 
metering circuit is in the B- CT return and the B- is floating 10 ohms 
from chassis ground. If I change the meter to a 1 volt voltmeter, do I 
then need a 1 ohm resistor to measure 1 amp FS of Plate current and a 
3.3 resistor to measure 300 ma FS of Grid Current ?. Of course there 
will be a 1k resistor in series with the meter. Is this corrext ??.

Next question is exactly where and what is needed for diodes to protect 
the meter ? I have seen so many different commbinations and placements 
that I'm totally confused. What is the current consensus ??.

Thanks...es 73

Ed W3NR