Magnifying Bar (Magnetic) - 8 in. [Pack of 1] Stationary Brand 8-Inch Magnetic Magnifying Bar with Magnet. Bar magnifiers are designed to magnify one to three lines of text at one time. They are placed flat on the page your are viewing, and are used by sliding down the page as you read. perfect as an addition to your office or home. Barre Loupe. Magnetique.