How To Choose A Good Magnifying Glass

The application of magnifying glasses in daily life is very extensive, and the most common way for us is to use magnifying glasses to read books and newspapers. However, when choosing a magnifying glass, we should still pay attention to some issues, otherwise we may choose an unsuitable magnifying glass. Generally speaking, handheld magnifying glasses are the most commonly used in our daily lives, and handheld magnifying glasses also have different magnifications. The higher the magnification, the smaller the displayed area will be, so it is not necessarily better to have a higher magnification. Next, let's take a look at the detailed knowledge of purchasing magnifying glasses with the editor. Tips for purchasing magnifying glasses
1. There are the most types of magnifying glasses with a magnification of less than 10 times, including small and portable ones, as well as those used for elderly people to magnify, read books, and newspapers. Magnifying glasses with a magnification of less than 10 times can be purchased with confidence as long as the quality is good, and there will not be too many false labels.
2. A magnifying glass with a magnification of 15 times or more is a bit knowledgeable. The most common handheld mirror is around 5cm, and the maximum is around 15 times. If the magnification is even larger, there should be two layers of mirrors. If it is a single-layer mirror, it often means that the magnification is imaginary.
3. Some coins use magnifying glasses with a mirror surface of about 2.5CM, which may still have a magnification of 30 or 40 times. However, it is important to fully understand that this type of magnifying glass is for professional purposes and is not suitable for the most commonly used elderly people reading newspapers.
4. Some magnifying glasses have two sets of mirrors, with the main mirror being relatively large but with a magnification of about 10 times, and the auxiliary mirror having a magnification of 1CM-2CM with a higher magnification. When shopping online, it is especially important to note that some shops only label high magnification for certain purposes.
5. Magnifiers with a size of less than 50 times may be equipped with white or purple lights. Purple lights are mainly used for anti-counterfeiting, while white lights are used in areas with weak light to see details of coins, mailboxes, etc. It is very convenient, and the price difference is not significant. It can be considered.
6. Pay attention to the product specifications of some stores, which will indicate the magnification and optical magnification, and the difference between the two is quite significant. Generally, the lower of the two is the true magnification, which can also be used as a reference when selecting.
7. Enlarge to 50-100 times, sometimes referred to as a microscope. At this size, the focal length must be very small, and the mirror size cannot be very large. Only a small area can be observed locally. In fact, similar instruments were used during student days, which can be imagined.
8. In addition, a magnifying glass with such a magnification can be divided into positive and negative phases. For the same magnification, the negative phase is much cheaper, and for civilian use, the reverse phase can be very twisted. Therefore, when purchasing, it is important to pay attention. If the magnification is the same, but the price difference is significant, it is important to ask clearly
9. Some magnifying glasses (usually over 100x) have a ruler, which differs greatly in price from equipment without a ruler and does not require special consideration. Such a high size for civilian use is only suitable for professional level anti-counterfeiting.
10. The purchase of magnifying glasses should avoid the misconception that higher magnification is better. The higher the magnification, the smaller the observation area and the closer the focal length. Moreover, magnifying glasses with higher magnification can cause discomfort and cannot be used for a long time, so it is appropriate.