PURPOSE: To correctly measure the liquefied gas sealed in as refrigerant and protect a scale without being affected by the environment or situation at a working site.

CONSTITUTION: A movable platform 3 is installed in a vertically shiftable manner in the upper part of a fixed platform 5. In the upper part of the movable platform 3, a gas cylinder weighing platform 2 is installed. An insertion pipe 4 is fixed on the movable platform 3. Inside the insertion pipe 4, a charging hose 8 is inserted. In the lower part of the fixed platform 5, a horizontal adjusting part 6 is formed. Between the fixed platform 5 and the movable platform 3, an elevating lever 7 is installed. A scale 10 is mounted on the fixed platform 5. A liquefied gas meter 1 is fixed horizontally by the horizontal adjusting part 6. On the gas cylinder weighing platform 2, a gas cylinder is placed. The center position for the scale 10 of the movable platform 3 is set by the elevating lever 7. The movable board 3 is shifted to the lower position by the elevating lever 7.