组号

0-25

25-50

50-75

75-100

1

15.00,15.12

15.25,15.39

40.00,40.12

40.25,40.37

65.00,65.12

65.25,65.37

90.00,90.12

90.25,90.37

2

15.12,15.25

15.37,15.50

40.12,40.25

40.37,40.50

65.12,65.25

65.37,65.50

90.12,90.25

90.37,90.50

3

15.25,15.37

15.50,15.62

40.25,40.37

40.50,40.62

65.25,65.37

65.50,65.62

90.25,90.37

90.50,90.62

4

15.37,15.50

15.62,15.75

40.37,40.50

40.62,40.75

65.37,65.50

65.62,65.75

90.37,90.50

90.62,90.75

5

15.50,15.62

15.75,15.87

40.50,40.62

40.75,40.87

65.50,65.62

65.75,65.87

90.50,90.62

90.75,90.87

6

15.62,15.75

15.87,16.00

40.62,40.75

40.87,41.00

65.62,65.75

65.87,66.00

90.62,90.75

90.87,91.00

平行平晶是以光波干涉原理为基础，利用平晶的测量面 与试件的被测量面之间所出现的干涉条纹来测量被测量面 的误差程度。

＊平行平晶具有高精度的平面性和平行性。

＊平行平晶用于检定千分尺、杠杆千分尺、杠杆卡规和千 分尺卡规等量具测量面的平面度和两相对测量的平行度。 平行平晶共分四个系列，每个系列各分六组，每组四块。