Designed to allow viewers to simultaneously inspect the entire image area of a film or negative as small as 32 x 45mm (microfilm), or flat objects up to 58mm in diameter on the 4x (B&H# PE1990) and 41mm on the 7x version (B&H# PE19907). Ordinary magnifiers are corrected only for the center image while the optical design of these loupes enable viewing from 1" above the eye piece - so that the entire image area may be viewed without moving one's head.
A detachable glass scale is included to allow for measurement of objects directly on the film plane. In case what you need is not a whole view of the object but an extended part of the object, Peak Anastigmat Lupe 7x is a suitable model for your purpose.
| Format | Various |
| Magnification | 4x |
| Lens Construction | Not specified |
| Linear Field of View | 58mm |
| Dioptric Correction Range | Not specified |
| Eyepiece | 30mm |
| Dimensions | 2.9 x 3" (73 x 77mm) |
| Weight | 10 oz. (272 g) |