How To Use Focal ratio In A Sentence

This high quality fully coated achromat with a focal ratio of f / 9 is compact for a 203 mm and weighs only 44 lbs and is supplied with high quality hinged mounting rings.

Linguix for Your Devices

Check grammar with our mobile app

Browser Extensions

Download for:

Linguix for Chrome

Linguix for Safari

Linguix for Firefox

Linguix for Microsoft Edge

Linguix for Microsoft Office

For Microsoft Word For Microsoft Outlook

Desktop

For Mac For Windows