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  1. A Brief Guide to Hand Lenses - Penn State Extension

    • Learn about different types of hand lenses, such as singlet, coddington, doublet, and triplet, and how they affect magnification, clarity, and field of view. Compare various brands and models of hand lenses and t… See more

    Singlet Lens

    A singlet hand lens contains a single lens; in many models the lens is convex at either end (Figure 1). Uncorrected singlets have low magnification power (most up to 5×, high qualit… See more

    Penn State Extension
    Coddington Lens

    A Coddington lens is a type of single lens that is constructed from a thick piece of glass with a diaphragm grove around the equator that corrects for spherical aberration. … See more

    Penn State Extension
    Doublet Lens

    A doublet hand lens contains two lenses; some lens arrangements can correct spherical and chromatic aberrations. The lenses can be cemented together or spaced apa… See more

    Penn State Extension
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  1. A hand lens, also called a loupe, is an important tool for a grower, scout, horticulturalist, and others who want to identify arthropods in the field and make informed decisions.
    extension.psu.edu/a-brief-guide-to-hand-lenses
    To use a hand lens or loupe, you hold the hand lens up to your eye and then bring the sample close it, only a few centimeters from your face. The point of this is to focus your attention through the lens like you would through an eye or magnifying glass.
    thefieldstudent.com/best-hand-lenses-loupes/
    A magnifying lens also called the hand lens is used to make small objects appear larger to the eye. This is especially important when examining very small specimen whose features are not clearly seen for example a mosquito. Take a look at the parts of a hand lens.
    oer-studentresources.gesci.org/wp-content/courses…
    A hand lens is a small magnifying "glass" (sometimes made of plastic) that generally folds into a protective case (right). It is one of the most useful tools for a gardener, next to gloves.
    livingwithbugs.com/hand_len.html
    The hand lens enables geologists to examine rocks closely to identify minerals, see the size and shape of grains, look for small fossils or crystals, confirm the results of a hardness test, and much more.
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  3. The Best Hand Lenses and Loupes - The Field Student

    Learn how to choose and use hand lenses or loupes for geology, mineralogy, and other sciences. Compare different types, magnifications, and brands of hand lenses, including BelOMO 10x and 12x triplets.

  4. Choosing a Hand Lens for Nature Study - Donna L Long

  5. Amazon.com: Hand Lens

    Carson TriView 5x/10x/15x Folding Loupe Magnifier with Built-in Case (TV-15), Black
    4.4/5 · Brand : Carson · Color : Black · Batteries Required? : No
    HTS 202A0 10x 21mm Stainless Steel Jeweler's Singlet Loupe
    4.5/5 · Color : Stainless Steel · Batteries Required? : No · Brand : HTS
    40X Jewelers Loupe Magnifier Hand Lens LED/UV Illuminated Jewelry Magnifying Glass wit…
    4.5/5 · Item Weight : ‎0.07 Pounds · Batteries Required? : ‎Yes · Color : ‎Chrome
  6. The NHBS Guide to Hand Lenses

    Jun 18, 2019 · Learn how to choose the best hand lens for your natural history observations. Compare glass and plastic lenses, single, doublet and triplet optics, magnification, diameter and LED options.

  7. A Guide To Hand Lenses | Custom Lens Design

    Learn about the different types, materials, and uses of hand lenses or loupes for earth science and other fields. Find out how to choose, clean, and care for your hand lens and get a free custom quote from Universe Optics.

  8. Hand Lenses Iwamoto, Bauch & Lomb Lenses and Field …

    Find a variety of hand lenses for geological research, including achromatic, coddington, and triplet lenses from Iwamoto and Bausch & Lomb. Compare prices, magnifications, and features of different models and kits.

  9. 24 Pack Hand Lens 10X Plastic Magnifier Mini Hand …

    Nov 25, 2019 · Buy 24 pieces of hand lens 10X, a dual-lens magnifier with 5X and 15X magnification, for kids, classroom, reading, outdoors, science observation. Made of acrylic, lightweight, durable, with keychain and lanyard.

  10. Ade Advanced Optics 10x21TB-A Triplet Professional …

    Sep 6, 2012 · Triplet glass lens for excellent Clarity ; Leather case with snap closure to hold loupe securely ; Three lens bonded together for high defination image › See more product details

  11. Handheld Magnifiers - Handheld Magnifier - Edmund Optics