Last Updated：2025/12/08

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(engineering) A line drawn marking a angle of 45 degrees, especially in the use of aligning the depth lines between the top and side views of a third angle projection technical drawing.

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mitre line

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Source Word

mitre line

Noun

(engineering) A line drawn marking a angle of 45 degrees, especially in the use of aligning the depth lines between the top and side views of a third angle projection technical drawing.

Japanese Meaning

工学分野において、第三角法投影図の上面と側面の深さ線を整合させるために、45度の角度を示す補助線として引かれる線

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When preparing the third-angle projection, ensure the mitre line is drawn at a precise 45-degree angle to transfer and align the depth lines between the top and side views.

Google Translation / DeepL Translation

第三角法の投影図を作成する際、上面図と側面図の奥行き線を一致させるために、45度の転写線を正確に引いてください。

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Sense（1）

(engineering) A line drawn marking a angle of 45 degrees, especially in the use of aligning the depth lines between the top and side views of a third angle projection technical drawing.

It is necessary to draw a line on the moulded surface which will be the intersection of the front and the return moulding. This line is known as a mitre line, and the intersecting arrises of the moulding, the mitre.

Google Translation / DeepL Translation

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mitre lines

（ plural ）

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mitre line

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mitre line

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