| Code | Unit | Diameter |
| A5012 | 1 pc | 19 mm |
Microscope Ocular Micrometer D19mm, C2 type, (root 2 to the N power) x L/200
- Microscope eyepiece reticle, √2n Grid Calibration Reticle. The circle areas of the Portion reticles increase with Root 2 progression as do the divisions on the right hand side of the rectangle. These divisions are numbered for convenience.
