Japan PEAK Bi Jia 1975 with a magnifying glass Product Description:

Features:

1, 7X magnifying lens is composed of the lens and the scale of the simple right of the optical measuring instruments,

2, the lens can be as much as possible to remove the aberration of 2 groups of 3 (pieces) constitute the type of focus adjustment ring.

3, due to the scale of chromium evaporation is extremely precise, not to mention the length of the angle, arc, curve 13 kinds of useful for all measurements.

specification:

1. Expansion rate: 7X

2. Effective diameter: 18mm ∮

3. Size: 36 ∮ × 57mm

4. Weight: 28g

5. Field of Vision: 24mm ∮