OmniOptic is a loupe that offers four magnification powers, ranging from 2.5x to 5.5x. The design of the loupe includes a magnetic anchor built into the carrier lens of the frame, so magnification can be changed without purchasing a new system.
The OmniOptic system supports many of the company's telescopes and is available as a through-the-lens configuration on a number of the company's frames.
OmniOptic interchangeable magnification loupe system. Image courtesy of Orascoptic.