All technological knowledge includes the ability to understand the design features, properties and performance limits of simple, powered and complex tools, instruments, machinery and devices.
A knowledge of 'Tools' facilititates good choices in design, and helps guide what system of tools and their safe use would best serve the project to assure it works in the intended context of its application. The Mouse Pointer and Cogs icon, reminds us that tools, at least initially, are designed to help transform, hold in place or measure specific kinds of materials. These tools may be for digital as well as physical materials. They may be as simple as our hands and teeth, or as seamless extensions of our capability such as manual and powered instruments and equipment.
Tools help us transform the materials we use in our natural, processed and digital environments. Tools present both a key resource as well as a constraint to the success of a project.