| Specification | J-Y1 | J-Y1T | J-Y1A | J-Y1AT | ||
| Viewing head | Compensation free Binocular Head . Inclined at 4 5 ° ( 50mm -75mm ) | ● | / | ● | / | |
| Compensation Free Trinocular Head . Inclined at 45 ° ( 50mm -75mm ) | / | ● | / | ● | ||
| Eyepiece | WF10X/ 20mm | ● | ● | |||
| WF10X/ 22mm | ● | ● | ||||
| WF10X/ 18mm with Cross graduation of 0.1mm scale | ○ | ○ | ○ | ○ | ||
| Objective | Long working distance plan objective | LWDPL4X/0.1W.D .25mm | ● | ● | / | / |
| LWDPL10X/0.25 phase contrast W.D .11mm | ||||||
| LWDPL20X/0.4 phase contrast W.D .6mm | ||||||
| LWDPL40X/0.6W.D. 3.8mm | ||||||
| Distance infinity plan objective | LWDPL4X/0.1W.D .29.4mm | / | / | ● | ● | |
| LWDPL10X/0.25 phase contrast W.D .16mm | ||||||
| LWDPL20X/0.4 phase contrast W.D .10.5mm | ||||||
| LWDPL40X/0.6W.D .5.4mm | ||||||
| Long working distance objective | LWDPL10X | ○ | ○ | ○ | ○ | |
| LWDPL20X | ● | ● | ● | ● | ||
| Long working distance phase contrast objective | LWDPL40X | ○ | ○ | ○ | ○ |