18 sold
Specifications:
Product ratio: standard 10 times, using 4 AG9 batteries (including batteries)
Product weight: 225g
Product size: 45 * 63mm / 1.77 * 2.48\"
Gift box size: 120 * 90 * 63mm / 4.72 * 3.54 * 2.48\"
Product material: metal, 3 optical glass coated lenses.
Model: Complex Scale
Principle:
In order to see the details of small objects, it is necessary to move the objects close to the eyes to increase the viewing angle and form a larger image on the retina.
But when the object is too close to the eye, it can\'t see clearly. In other words, to understand the facts, not only should the object have a large enough angle with the eye, but also an appropriate distance should be kept. Obviously, for the eyes, these two requirements are mutually restrictive. If we put the convex lens in front of our eyes, we can solve this problem. Convex lens is the simplest magnifying glass. It is a simple optical instrument, which can help the eyes to observe small objects or details.
Usage method:
Observation method 1: make the magnifying glass close to the object to be observed, and keep the distance between the human eye and the object to be observed unchanged. Then move the hand-held magnifying glass back and forth between the object and the human eye until the image is enlarged and clear.
Observation method 2: close the magnifying glass to the eye as much as possible. The magnifying glass does not move until the image is large and clear.
Objective:
1. Achromatic lens without chromatic aberration can observe the picture and identify the gem very clearly. It has a box for easy carrying.
2. It can also be used for jewelry certification test, substrate surface quality, color correction, etc.
Notes:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3cm measuring deviation due to manual measurement.
