| Specification list | Specification | JM-E | JM-7C | JM-2 | JM-3 | 
| Viewing head | Inclined binocular | ● | ● | ● | 
 | 
| Inclined trinocular | ○ | 
 | 
 | ● | |
| Head 360°rotatable | ● | ● | ● | ● | |
| Eyepiece | WF5X | ○ | ○ | ○ | ○ | 
| WF10X | ○ | ● | ○ | ○ | |
| SWF10 | ● | 
 | ● | ● | |
| HWF10X | ○ | 
 | ○ | ○ | |
| WF15X | ○ | ○ | ○ | ○ | |
| WF20X | ○ | ○ | ○ | ○ | |
| Objective | 0.75X-5X | 
 | 
 | ● | ● | 
| 1X-4X | ● | 
 | 
 | 
 | |
| 0.7X-3.6X | ○ | 
 | 
 | 
 | |
| 2X/4X | 
 | ● | 
 | 
 | |
| 1X/3X | 
 | ○ | 
 | 
 | |
| 1X/2X | 
 | ○ | 
 | 
 | |
| Incident light | Halogen lamp 12V/10W | ● | ● | ● | ● | 
| Fluorescent 10W | ● | ○ | ● | ● | |
| Single fiber | 
 | 
 | ● | ● | |
| Transmitted light | Halogen lamp 12V/10W | ● | ● | ● | ● | 
| Accessory | Jewel tweezer | ● | ● | ● | ● | 
| Darkfield working stage (with diaphram) | ● | ● | ● | ● | |
| ● standard ○ optional | |||||
OPTICAL DATA:
| Model | Objective | Working distance | Field of view | 
| JM-E | 1X-4X | 90.5 | 22-5.5 | 
| 0.7X-3.6X | 86 | 26-5.8 | |
| JM-7C | 1X | 75 | 20 | 
| 2X | 91 | 91 | |
| 3X | 69 | 10 | |
| 4X | 70 | 5 | |
| JM-2/JM-3 | 0.75X-5X | 113 | 33-5.1 |