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The L490 lab jack utilizes a dual-pantograph
design which offers good rigidity. The adjustment mechanism
uses a lead screw to close the angle between the opposing
pairs of supporting struts. Stainless steel axles and
connecting rods allow loads of up to 75lbs (34kg) to
be smoothly elevated over the full range of the L490.
The top plate has an array of nineteen 1/4"-20(M6)
tapped mounting holes on 1"(25mm) centers. Additional
mounting slots have been added to both the top and bottom
plates.
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