A T-Square is a drafting tool for drawing straight horizontal and vertical lines, relative to the edge of the drafting board.
Generally a ruler is a straight edge, but it can be anything... I generally just use a spare pencil.
Caliper. Micrometer
A compass and straight edge are used to create a polygon but do not limit the number of sides of the polygon created. You have to decide that separately, then use the compass and straight edge to make what you decide on.
One may purchase a straight edge razor at Vintage Edge Razor. They supply blades, handles and complete kits. These are nice gifts for any man who prefers to use this style of razor.
A straight edge is used for making perfectly straight lines when drawing. The straight edge is placed on the paper and you use the edge to draw against.
A T-Square is a drafting tool for drawing straight horizontal and vertical lines, relative to the edge of the drafting board.
Generally a ruler is a straight edge, but it can be anything... I generally just use a spare pencil.
Like: "The edge of a ruler is straight" or "I walked straight to the store"
A ruler or a measuring tape can be used to measure a straight sided object. Simply lay the ruler or tape along the object's edge and read the measurement where it stops.
Caliper. Micrometer
To make grooves in wood effectively using a tool, ensure the tool is sharp and appropriate for the job. Use a straight edge as a guide to keep the groove straight and consistent. Apply steady pressure and work slowly to achieve the desired depth and width of the groove. Practice on scrap wood before working on your final piece for best results.
To achieve smooth and straight edges in woodworking without using a jointer, you can use a table saw with a straight edge guide or a hand plane. Make sure to measure and mark your cuts accurately and use a steady hand to guide the tool along the edge for a clean finish. Sanding the edges afterwards can also help achieve a smooth surface.
A compass and straight edge are used to create a polygon but do not limit the number of sides of the polygon created. You have to decide that separately, then use the compass and straight edge to make what you decide on.
A geometrical construction can be made with with a straight edge and a compass.
Use a dremel rotary tool with a grinding wheel to grind the corners off the edges of a large, thick sized flat head screw driver, making the edges are rounded. Use this hand made tool in combination with straight edge, clamped on top of your cardboard, to your work surface. Run your crease tool, with pressure, along the straightedge, making several passes, while gradually increasing pressure. Another option, (which would likely work for small boxes and a large square), is to clamp a straight edge to your cardboard (and hardware stores sell straight edges with built in clamps). Then, take a thick sided metal square, and stand it upright, along your clamped straight edge. Use a rubber mallet and pound along the edge of the metal square to create a crease. (However, the metal square should be larger than the piece of cardboard, otherwise, the corners of the square will likely pierce into the cardboard).
"Straight-edge." The term was coined by the hardcore punk band Minor Threat (who founded the Straight-Edge movement). Not all straight-edge people have the same beliefs, but, generally speaking, most straight-edge punks are against people taking any kind of drugs -- including prescription drugs, alcohol, and cigarettes.