### 44.9 Mass and Weight

`GSL_CONST_MKSA_POUND_MASS`

  The mass of 1 pound.

`GSL_CONST_MKSA_OUNCE_MASS`

  The mass of 1 ounce.

`GSL_CONST_MKSA_TON`

  The mass of 1 ton.

`GSL_CONST_MKSA_METRIC_TON`

  The mass of 1 metric ton (1000 kg).

`GSL_CONST_MKSA_UK_TON`

  The mass of 1 UK ton.

`GSL_CONST_MKSA_TROY_OUNCE`

  The mass of 1 troy ounce.

`GSL_CONST_MKSA_CARAT`

  The mass of 1 carat.

`GSL_CONST_MKSA_GRAM_FORCE`

  The force of 1 gram weight.

`GSL_CONST_MKSA_POUND_FORCE`

  The force of 1 pound weight.

`GSL_CONST_MKSA_KILOPOUND_FORCE`

  The force of 1 kilopound weight.

`GSL_CONST_MKSA_POUNDAL`

  The force of 1 poundal.