This kind of balance is iron lever mostly, malady is near balance department, weighbeam can be extended can shrink, control in 5 centimeters commonly.

• 这种秤大都是铁杆，弊病在秤系四周，秤杆能伸能缩，一般在5厘米左右。秤猪时秤杆缩进去，检秤时把秤杆拉出，定盘星还准。