50 reading magnifying glassDetailed product description：

Product Introduction
The 50x reading magnifying glass is widely used in the printing and plate making industry, precision industry, steel industry, textile industry, electronics industry, cultural relic appraisal, antique collection, etc

Technical parameters of 50x reading magnifying glass:
1. Numerical aperture: 0.085
2. Magnification: 50x (with scale)
3. Object line field of view: φ 2.4mm
4. The minimum grid value of the reticle is 0.02mm, and the maximum range of the reticle is 3mm (50 times with scale). All optical lenses are coated with anti reflective film
5. Appearance: Φ 12 × 122mm aluminum alloy sleeve.