1. Upgraded Version More accurate scale. Laser engraving is not easy to deviate from main cutting channel with its physical properties. More smart design. To let the rule working better by easier to level on flat surface, some changes have been made on the back and screws design. Shallow backing moving track and smaller screws bottom. 2. Longevity Point 1, Alloy has a higher hardness than single metal. It is why some stainless steel rulers are easy out of shape, but a hard aluminium alloy ruler not. Point 2, Full body metal. Alloy nuts and bolts is more durable than plastic or half plastic version which may not easy to control when there is some destroy on its inner or surface. Point 3, Gaskets between knobs and rulers front surface can protect the scale. Laser-engraving technique makes the scale wear-resisting and small cushions take care of it, double safety for a longer service life. 3. Handy & Portable Soft small black pouches can reduce the destroy of accidental scratches and dropping. Awesome bag color let it easy be found in other measuring template tools, when we need to carry it for another place. 4. Why need a long life folding functional ruler extension measurement tool? Save money. A reusable stencil with any desired angles. No need to get a new template ruler for each new work. Save time. Sliding the multi-angle measuring ruler into the angle can save our time on repetitive measurements and also reduce materials wasted from inaccurate cuts. Four-sided ruler fold design is easy to store. A great help for us to layout on most materials (wood, tile, brick, stone, lumber, laminate plywood), when we use it around the house for some flooring and paving, or other home project. A wonderful engineer gift for engineering students!
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