tool
???
Instead of using a roofer's hammer and slater's stake, slates can also be
cut to size with these slate shears. These are scissors with a flat lower
jaw that slopes downwards and in which there is a rectangular recess in
which the upper jaw fits. The slate is placed on the lower jaw and when
closing the scissors, a piece of the slate is cut off. In this way, one can
continue to cut along the same line to remove a complete piece of the
slate. Often there is a protrusion on one of the arms that prevents the
hand from sliding forward when cutting. There are also fixed models with a
sharp protrusion that can be hammered into the roof boarding. [MOT]