Eyepiece
| Model No. | Description |
|---|---|
| OP-EL10S | 10X Small type |
| OP-EL10L | 10X Large type |
| OP-EL10G1 | 10X Cross line |
| OP-EL10G2 | 10X Cross line with 10mm scale |
| OP-EL10G3 | 10X Cross line with angle & radius scale |
| OP-EL15 | 15X |
| OP-EL15 (HM) | 15X (for HM only) |
| OP-EL20 | 20X |