Magnifying Glasses

Magnifying glasses are devices typically used as vision aids that allow you to enlarge the apparent size of something and see it in greater detail and resolution. They feature a rounded convex lens, with light bending and converging at a focal point. Most are small and portable and designed for short-term uses such as reading small print.

How is the power of magnifying glasses measured?

You may see the power of a magnifying glass measured in multiple ways. The most common is ’times magnification’, which describes the number of times larger an object will appear when viewed through the device e.g. a 5x magnifying glass.

Dioptre is another method of measuring a device’s magnifying power. Also known as diopter, this is the measurement of the lens’ ability to bend light over its surface and is a power increase of 25% so 3 dioptres = 1.75x magnification and 5 dioptres = 2.25x.

What are the different types of magnifying glasses?

Magnifying glasses come in all shapes and sizes. Common types include handheld magnifiers, bench magnifiers and surface contact magnifiers.

Handheld magnifiers typically have a handle attached to the lens, allowing you to easily move the device closer or further away from your eyes or an object. This type is the most basic and instantly recognisable.

Bench magnifiers are designed to be placed on or attached to a surface, with an adjustable arm allowing you to move the position of the lens while keeping your arms free. They’re commonly used by dentists and jewellers, and can also be used for inspecting electronics and mechanical parts.

Surface contact magnifiers are small devices without a handle or arm that can be placed directly onto a surface. They’re commonly used in jewellery, watchmaking, photography, among many other industries.

Where are magnifying glasses used?

Magnifying glasses are used in a range of industries including jewellery, science and electronics. A jeweller’s magnifying glass will be used to inspect the quality of gemstones for example, whereas an electronics service engineer may use a magnifying glass to check for faults on an electrical circuit.

If you’re looking for a magnifying glass for personal use, a pocket magnifying glass is easy to carry around and can help with simple tasks such as reading food menus and guidelines on medicine packaging.


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Description Price Magnification Power Optical Power Lens Diameter Illuminated Battery Operated Battery Type Type
RS庫存編號 877-1741
BrandRS PRO
HK$143.00
單位
1.5 X, 3.0 X, 9.0 X, 10.5 X - - - - - -
RS庫存編號 534-2400
BrandRS PRO
HK$497.57
單位
1.2 X, 1.8 X, 2.5 X, 3.5 X - - - - - -
RS庫存編號 290-1539
BrandRS PRO
HK$836.37
單位
2.5 - - - - - -
RS庫存編號 606-989
BrandRS PRO
HK$1,085.81
單位
2.7 - - - - - -
RS庫存編號 528-5335
BrandRS PRO
HK$41.99
單位
5 - 70mm - - - Hand Magnifier
RS庫存編號 432-463
製造零件編號183-202
BrandMitutoyo
HK$2,053.69
單位
25 - - - - - Pocket Magnifier
RS庫存編號 528-5307
BrandRS PRO
HK$71.73
單位
3 X, 4.5 X, 6 X, 9 X - - - - - Pocket Magnifier
RS庫存編號 732-858
BrandRS PRO
HK$253.55
單位
20 - 26mm - - - Bi-Aspheric Eye Magnifier
RS庫存編號 780-2844
製造零件編號171097
BrandEschenbach
HK$357.16
單位
7 28dioptre 35mm - - - Precision Folding Magnifier
RS庫存編號 288-1441
製造零件編號5146/05
BrandCoil
HK$404.03
單位
5 16dioptre 45mm Yes Yes AA Pocket Magnifier with Integral Handle
RS庫存編號 780-2828
製造零件編號151141
BrandEschenbach
HK$657.31
單位
4 16dioptre 60mm Yes Yes 2 x AA -
RS庫存編號 780-2825
製造零件編號15113
BrandEschenbach
HK$727.47
單位
3.5 10dioptre - Yes Yes 2 x AA -
RS庫存編號 780-2897
製造零件編號158620
BrandEschenbach
HK$1,281.17
單位
5 20dioptre 58mm Yes Yes 3 x AA -
RS庫存編號 877-6702
製造零件編號152111
BrandEschenbach
HK$571.04
單位
3 8dioptre - Yes Yes CR2025 Pocket Magnifier
RS庫存編號 287-6124
製造零件編號5148/05
BrandCoil
HK$375.29
單位
9 32dioptre 45mm Yes Yes AA Pocket Magnifier with Integral Handle
RS庫存編號 780-2875
製造零件編號155394
BrandEschenbach
HK$638.12
單位
5 20dioptre 58mm Yes Yes - -
RS庫存編號 780-2935
製造零件編號117610
BrandEschenbach
HK$697.03
單位
10 - 21mm - - - Precision Folding Magnifier
RS庫存編號 200-9425
BrandRS PRO
HK$878.36
單位
10 - 19mm - - - -
RS庫存編號 224-5277
製造零件編號5203/05
BrandCoil
HK$538.82
單位
3 8dioptre 81mm - - - Bi-Aspheric Eye Magnifier
RS庫存編號 877-6708
製造零件編號152110
BrandEschenbach
HK$557.45
單位
3 8dioptre - Yes Yes CR2025 Pocket Magnifier