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2-8量距之誤差及其改正 - Coggle Diagram
2-8量距之誤差及其改正
2.系統誤差
(4)垂曲誤差
(5)量距方向偏斜
(3)因拉力不均之尺長改變
(6)捲尺不水平
(2)因溫度升降之尺長變化
(1)尺與標準尺長不符
誤差改正
(3)拉力改正(tension correction)
(4)垂曲改正(sag correction)
(2)溫度改正(temperature correction)
(5)傾斜改正(inclination correction)
(1)尺長改正(tape-length correction)
(6)海平面歸化改正(correction for reduction to sea level)
1.錯誤
(3)數錯測針
(4)測針位移
(2)記錄錯誤
(1)讀數錯誤
3.偶然誤差
(2)對點不準
(3)最小刻劃以下讀數估計不準
(1)捲尺未拉直