I just noticed that we have multiple units in the english system. We have
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lb, lbm, and lb.m for pound mass
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lbf for pound force
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lbmole for pound-mole of substance
I would like to suggest a clean up/consistency of
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lb.m for pound mass
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lb.f for pound force
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lb.mole for pound-mole of substance
I would also like to request the IP gravity constant conversion factor g.c=32.174 (lb.m*ft)/(lb.f*s^2)