名词
中文翻译：平直度规
同义词：
['leveling rod', 'leveling device']
例句：
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1.The engineer used a levelling gauge to ensure the wall was perfectly straight.
工程师使用水平仪确保墙壁完全直。
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2.The construction crew used levelling gauges to check the accuracy of the building's foundation.
建筑工人使用水平仪检查建筑物基础的准确度。
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3. The surveyor used a levelling gauge to measure the depth of the riverbed.
测量员使用水平仪测量河床的深度。