| 摘要 |
A laser level (IQ) is disclosed as including two spirit level tubes ( 42, 44 ) fixedly engaged with an extruded aluminium tube bracket ( 36 ); and a laser-emitting module ( 34 ) fixedly engaged with an extruded aluminium laser bracket ( 38 ), in which the tube bracket ( 36 ) and laser bracket ( 38 ) are engaged with each other.
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