National - Sheet Metal Machines, INC. - Metal Shears
Sheet metal shear operation 101 - YouTube
Kaka industrial HS-40 Guillotine Metal Shear, 39 inch Bed Width, 16 Gauge Metal Guillotine Shear with a Stand for Construction Work Sheet Metal Fabrication Plate Cutting Cutter - - Amazon.com
10M14 Mechanical Sheet Metal Shear by Roper Whitney