When drawing with a T-square, the horizontal line of the head is pressed against the drawing plate to ensure the horizontal line drawn. Therefore, each time you draw a horizontal line, you must hold the T-square by hand to prevent the horizontal line from skewing. It is especially convenient when the board is placed in a slope. This is not convenient. For this reason, I modified the T-square as shown in the figure. Firstly, the 80cm T-square end positioning ruler is removed, and two holes with countersunk heads are machined at 60mm from both ends, and the roller 3 is fixed on the T-square 2 with the sleeve 6, the screw 5 and the nut 4, and the roller 3
Simple Bathtub
Simple Bathtub
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