| 摘要 |
PURPOSE: A spring scale using a pulley is provided to keep an object being measured vertically downward even if the spring scale shakes and the indicator is not located vertical to the ground. CONSTITUTION: A spring scale comprises an indicator(2) which is accepted in a cylinder(3) and allowed to reciprocate, a loop which is provided on the end of the indicator, a support plate(100) in which the cylinder is fixed, a pulley(200) which is connected to an end of the support plate, a connection wire(300) which connects the loop to a side of the pulley, and a measuring wire(400) which is coupled to the other side of the pulley independent of the connection wire to suspend an object.
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