A.0.1~0.15mm B.0.15~0.25mm C.0.15~0.2mm D.0.2~0.25mm
A.將靜接點沿刻度盤移動 B.調整鐘表機構 C.凋整復位彈簧 D.改變銜鐵位置
A.0.5~1.5s B.0.1~0.5s C.0.25~1.0s D.1.0~2.5s