~= 1 lb.tr. 4 oz.tr. 1 pwt.tr. 12 grain.tr. 1/5 grain.tr.
1 lb = 1.3396142967942 lb.tr.
1 lb.tr. = 0.746483523200 lb
https://www.unitjuggler.com/mass-convertir-metriclb-a-lbtr.html