Hobbies Magnification Articles
Coins, stamps, watches, needlework, insects and rocks: how to see mint marks, perforations, stitches and other small details with a phone.
Best Coin Apps for iPhone [2027: ID, Value, Loupe]
Best coin apps for iPhone: CoinSnap and Coinoscope for ID, PCGS CoinFacts and NGC for price guides, LuckyCoin to track, and a loupe for mint marks.
ReadWhere Is the Serial Number on a Watch? [Rolex, Omega, Seiko]
Where to find the serial and reference number on a watch: case back, between the lugs, rehaut or movement, with notes for Rolex, Omega and Seiko.
ReadWhere Is the Mint Mark on US Coins? [Location Chart]
Where the mint mark is on Kennedy half dollars, Roosevelt dimes, quarters, nickels and pennies, by year, what P, D, S and W mean, and why some have none.
ReadJewelry Stamps Meaning: 925, 14K, 750 and More [Chart]
What jewelry stamps mean: 14K, 585, 925, 750, PT950, GF, HGE, EPNS and more. Charts for gold, silver and platinum marks, and how to read a worn stamp.
ReadiPhone Loupe: Use a Jeweler’s Loupe With Your Phone [Guide]
Two ways to use your iPhone as a loupe: hold a 10x jeweler’s loupe over the camera, or use a loupe app. How to line up and focus each, and which to pick.
ReadInsect Identification With Phone Magnification [Guide]
Which features identify an insect at 10x to 30x, how to photograph a live insect without harming it, and how to get useful help from ID communities.
ReadRock and Mineral Identification With a Phone [Field Guide]
How to identify rocks and minerals using luster, hardness, cleavage, crystal shape, and grain size, with phone magnification at 5x to 30x for the details.
ReadHow to Grade and Authenticate Stamps [Centering, Perfs, Gum]
How to grade a stamp’s centering, perforations, gum and paper at 5x to 20x, what Superb, XF, VF and Fine mean, and when to send a stamp for expertizing.
ReadCoin Collecting With a Digital Loupe [Practical Guide]
How coin collectors use a phone as a digital loupe for mint marks, die varieties, wear, and counterfeits, and where a 10x glass loupe still wins.
ReadNature Walks With a Digital Magnifying Glass [Field Guide]
How to use your phone as a hand lens on nature walks: what to look at on leaves, bark, lichen, insects and rocks, and how to get sharp close-ups outdoors.
ReadNeedlework Magnification [Cross-Stitch to Lace Guide]
How to see high-count fabric and fine threads clearly: magnifier types compared, which zoom to use, and how to check your stitching without eye strain.
ReadStamp Collecting in the Digital Age [Practical Toolkit]
How modern stamp collectors combine a loupe, phone magnification, good lighting, and online catalogs to identify, photograph, and record stamps at home.
ReadWatch Enthusiast's Guide to Micro Details [Inspection Tips]
What to examine on a watch dial, case, crown, and movement at 10x to 30x, how to light it, and how to photograph details for records or a sale.
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