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Specifications:
Product ratio: 10 times
Lens diameter: 28mm/1.1"
Product light source: 2 LED white lights, 2 UV violet lights
Product power supply: USB charging
Size: 45 * 45 * 42mm/1.77*1.77*1.65"
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.
Purpose:
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.
Be careful:
1. Due to different display and lighting effects, the actual color of the project may be slightly different from the color shown on the picture. Thank you!
2. Due to manual measurement, please allow slight measurement deviation.?
Product ratio: 10 times
Lens diameter: 28mm/1.1"
Product light source: 2 LED white lights, 2 UV violet lights
Product power supply: USB charging
Size: 45 * 45 * 42mm/1.77*1.77*1.65"
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.
Purpose:
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.
Be careful:
1. Due to different display and lighting effects, the actual color of the project may be slightly different from the color shown on the picture. Thank you!
2. Due to manual measurement, please allow slight measurement deviation.?
1 X Magnifier ?
1 X Cloth Bag ?
1 X USB Cable ?
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1 X Cloth Bag ?
1 X USB Cable ?
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 ? ?  ? Drop Shipping Service. 1.There is no limited stock to fulfill the orders on a daily basis. ? 1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO) 2. Orders processed timely after the payment verification.3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. 4. The images shown are not the actual item and are for your reference only. 5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit time may vary, particularly during the holiday season. 6. If you have not received your order after 30 days from payment, please contact us. We will trace your order and get back to you asap. Our goal is customer satisfaction! 7. Delivery : ?  
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