在微刻度尺上刻圆形、正方形、条形和其他几何形状， 可作为测量系统的标准和标定使用。 表中列出了八个测试板的各自特征。2.5英寸的线刻尺可针对大尺寸物体进行标定和测量，每0.5"标定一个。载玻片的尺寸：1"W x 3"L x 1.5mm T。载波片上右边的的大圈直径为0.5英寸。检光板1-4与上边的图一致，5-8与下面的图一致，都是从左到右。1，2，8款是通过NIST认证的测微计。
| Plate | Frame Size | Description |
| 1 | 4.6 x 3.5mm | Circles with 2.00, 1.00, 0.50, and 0.25mm diameter |
| 2 | 1.0 x 0.8mm | Circles with 0.500, 0.250, 0.125, 0.0625mm diameter |
| 3 | 1.0 x 0.8mm | 7 bars separated by 30°, 0.200 x 0.020mm |
| 4 | 1.0 x 0.8mm | Various circles, bars, and angular features |
| 5 | 1.0 x 0.8mm | Squares of 0.100, 0.040, 0.020mm (2 sets) |
| 6 | 2.05 x 1.65mm | Grid with 0.050mm lines at 0.100mm pitch |
| 7 | 4.2 x 3.4mm | Grid with 0.200mm lines at 0.200mm pitch |
| 8 | 10mm long | Scale with 0.010mm divisions |
分刻度:
0 to 2.5 inches
增量:
0.5 inches
尺寸 (mm):
25.4 x 76.2
厚度 (mm):
1.50 ±0.100
尺寸容差 (mm):
±0.100
Pattern Tolerance (μm):
±2 (±4 for Plate 1 Item #3 and #4)