所谓浮力弹簧秤,即在弹簧秤原来标有刻度的外壳上附加一个能够上下自由滑动的标尺,我们把此标尺称为浮力标尺.浮力标尺的刻度起点在尺的下端边沿并向上读数(与弹簧秤外壳上标尺的刻度方向相反),刻度尺的大小和单位与弹簧秤标尺的刻度相同.使用时,只要把重物挂在秤下端的钩上,从指针的位置可以在原来的标尺上读出物体在空气中的重力数值 G,然后调节浮力标尺, The so-called buoyancy spring scale, that is, in the original scale marked housing of the spring scale is attached with a scale which can freely slide up and down, we call this scale the buoyancy scale. The scale of the buoyancy scale starts at the lower edge of the scale and reads upwards (with spring scale housing The graduated scale is in the opposite direction.) The size and unit of the scale are the same as those of the spring scale. When used, as long as the weight is hung on the hook at the lower end of the scale, the object can be read from the position of the pointer on the original scale. In the gravity value G, then adjust the buoyancy ruler,