[Boatanchors] question on ammeters

[Lawrence Mayhew]

I admit I once knew this but at 75 I need some help. How do you wire a 100
amp AC current meter to read 10 amps full scale, It is a current transformer
style meter manufactured by General Electric #50-250239LSZZ1 . I can still
figure out DC meters.   I suspect that the current transformer has to have
the ratio changed, and that sounds messy. '
Thanks for any help,.............Larry in Seattle