也称变幅限位或幅度指示器，一般的动臂起重机的起重臂上都挂有一个幅度指示器。
Also known as the amplitude limit or range indicator, jib cranes general boom are linked to a range of indicators.
所有的起重机都应当有主钩的起重能力指示器和扒杆角度指示器，并且起重机司机要看得见。
All cranes will be equipped with a functional weight indicator on the main hoist and a boom Angle indicator, both visible by the operator.
从国外进口的大吨位起重机上均配置安全负荷指示器进行安全装卸的自动控制。
Imported large cranes are equipped with safe load meter to ensure automatic control over safe handling.
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