1. 30x lens is applicable to viewing tiny characters , fingerprints etc;
2. 60x lens is applivable to viewing printing grids, electronic component numbers;
3. 90x lens is applicable to viewing flaws of jewelry and diamonds.
Light source converter operation :When change-over switch is pushed forward to LED 60X position , tiny objects can be viewed on 30X, 60X lens. Anti-counterfeit identification like currency detecting etc. can be operated when light source change-over switch is pushed to middle UV sign , And when light source change-over switch is pushed to 90X position , tiny objects can be viewed on 30X, 90X lens
