This pocket magnifier does exactly what it says on the tin. It contains three identical lenses that can be used individually or in combination. When all used together the stack makes a powerful magnifying glass with a relatively short working distance so you need good light. Used alone or in pairs, the working distance is more reasonable, but the increase is smaller. I haven't attempted to measure focal length or magnification, but compared to other lenses, the 5x magnification claim for single lenses is plausible. The 10x magnification for the pair and the 15x magnification for all three are of course due to the properties of the lenses. I actually carry it mainly as a macro lens for my phone camera. It's easy to lean against the back of the phone when taking photos when the lens(es) are aligned with the camera, and the powerful magnifying lens allows the camera to focus very close to the subject.
Ultra-High Capacity EPSON T502 EcoTank Ink Bottle In Black (T502120-S) - Compatible With Selected Epson EcoTank Printers
26 Review
Epson T124 DURABrite Ultra Standard Capacity Ink Cartridge Combo Pack (T124120-BCS) For Select Stylus And Workforce Printers - Black & Color
24 Review
Transparent Polycarbonate Chair Mat By RIF6 - Heavy Duty Floor Protector For Home Office Or Living Space
24 Review
Chair Mat For Hard Floors 55" X 35" Rectangular Protector - 1/6" Thick Low Pile Desk Rug Home Office Rolled Packaging Black
22 Review
25,000 Pcs Fuse Beads Kit By INSCRAFT - 26 Colors 5MM Including 127 Patterns & 4 Pegboards + Ironing Paper & Tweezers
37 Review
Meland Fuse Beads Kit - 24000Pcs Of 24 Color 5MM Iron Beads Set With Pegboards - Perfect Craft Gift For Kids On Birthdays & Christmas!
37 Review
Aquabeads Beginner Arts & Crafts Bead Kit For Kids - 900+ Pieces Carry Case Set
26 Review
EuTengHao 1100Pcs Irregular Chips Stone Beads Natural Gemstone Beads Kit With Earring Hooks Spacer Beads Pendants Charms Jump Rings For DIY Jewelry Necklace Bracelet Earring Making Supplies
26 Review