[Test-Equipment] Triplett 630

[W8KZW]

Perhaps someone can help.

I have recently acquired a Triplett 630 (no suffix at all)  that needs some
work.  I believe some resistors on the turret have burned out.

A web search produces manuals for  a 630-NA, PL, PLK, Type 5, and NS, but
nothing with no suffix.

Are any of these consistent with my "plain jain" 630?  I have an NA so I
know that's a different meter.

Thanks.

Jeff
W8KZW