Includes a specially designed spring scale so you can measure how the machines change the direction and magnitude of forces
Suitable when using either a utility knife
Explore the forces acting on structural components including tension
this bridge is an elegant reminder of the cool truss bridges that used to be built years ago and are still in use
put on your favorite period music
SILICONE RESIN PRINTING MAT – 410 X 310MM magnifying glasses Includes a specially designed springProtect your workbench area with a heat resistant, chemical resistant, UV resistant, non slip, easy clean silicone placemat. Also suitable for use in projects that require soldering, sanding, gluing, painting and more. If you work with resin, or if you use a printer, this would be a great cover for your work surface. Measures 410 x 310mm and made from silicone giving greater durability. Simply harden any resin spills out in the sun, then give the mat