精密分度盘的英文

• precision index plate

• 精密:    precise; accurate
• 分度:    scale division; scale mark; ...
• 盘:    tray; plate; dish
• 分度盘:    calibrated dial; divided circle; dividing dial; dividing disc; dividing disk; dividing key; dividing plate; graduated disc; graduated plate; index dial; index disc; index plate; indexing disc; indexing plate; limb; plate index
• 分度盘，刻度盘:    graduated plate