25 reading magnifying glassDetailed product description：

Product Introduction
The 25x reading magnifying glass is widely used in the printing and plate making industry, precision industry, steel industry, textile industry, electronics industry, cultural relic identification, antique collection, etc.

25 times reading magnifying glass technical parameters:
1. Numerical aperture: 0.085
2. Magnification: 25x
3. Object line field of view: φ 3.24mm
4. The minimum grid value of the dividing board is 0.05mm, and the maximum range of the dividing board is 3mm (25 times with scale)
5. All optical lenses are coated with anti reflective film.
6. Appearance: Φ 12 × 122mm aluminum alloy sleeve.