France: Weights

To calculate the Paris livre marchand (abit less than 0.5 kg):   
1 Livre = 15.7378 English Troy Ounces.







Where 1 Kilogram = 2.17341 libras castillan, 1 libra = 0.4601 kg; 1 quintal castillan = 46.01 kg, or 1,479.3 or 1,480.3 English Troy Ounces.