English T-square

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An English T-square for drawing straight lines. The narrowing of the bottom blade makes the T-square look as if it is not perpendicular.

Source

French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)

Downloads

TIFF (full resolution)

2400×800, 113.9 KiB

Large GIF

1024×341, 17.4 KiB

Medium GIF

640×213, 9.2 KiB

Small GIF

320×106, 4.0 KiB