Fixed Triangular Head T Square Small 254×320 Medium 507×640 Large 812×1024 Download Tiff Original 1902×2400 | (262.7 KB) Description "To enable the drawing of long parallel, the head must have been a long contact surface with the edge of the board. It must also be wide enough to hold the blade stiffly." —Grimshaw, 1902 Keywords Fixed Triangular Head T Square, Fixed Triangular Head T-square, Fixed Triangular Head tsquare, Mechanical Drawing Tools, T-square, T-squares Galleries Mechanical Drawing Tools Source: Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902) Courtesy the private collection of Roy Winkelman
