Weighing instrument

The invention relates to the field of instrument industry manufacturing and discloses a weighting instrument. The weighting instrument comprises a housing, wherein a display window and buttons are arranged on the housing. The housing comprises a front cover and a back cover. A first groove corresponding to the size of the display window is formed in the upper portion of the front cover. A second groove corresponding to the size of the buttons is formed in the lower portion of the front cover. A printing port is further formed in the lower portion of the front cover. The housing is provided with a support. The support comprises two supporting rods and a supporting face which is connected with the two supporting rods. Reverse trapezoidal clamping grooves are formed in the upper portions of the supporting rods. A storage battery and a temperature-sensitive mini-type printer are arranged in the housing. When the weighting instrument is worked, the supporting face is matched with the supporting rods to stably supp