| I reached the chart table, almost falling over my leaden feet, seized a short permal T-square, and levered the cover up. |
| Rectangles come naturally when you draw with a T-square on a drawing board. |
| This led to art in a lab coat, crucified on a T-square. |
| Place a ruler along your T-square and measure off the amount you wish to remove. |
| Place a T-square at the top of the first lift and place a 30-60-degree triangle so that the 30-degree angle is on the T-square at the first insertion line. |
| If a keyway is to be cut by hand through a bore, as in a pulley or gear-wheel bore, its width should be marked with a T-square. |
