-- REVIEW --
DESCRIPTION - COMMENTS: Nickel-plated or gold-colored teardrop-shaped fold-away protective enclosure into which lens folds when not in use. The plastic housing that surrounds the lens is coated black to block out glare. Hastings triplet magnifiers have three separate lenses that are bonded together to form a compound 3-element lens for sharp, undistorted images. Yields excellent view in terms of distortion and color accuracy. Useful for examining a wide variety of objects - coins, stamps, gems, crystals, rocks, u-name-it. Used mostly as a quick grading tool and for in-the-field and in-store use. (Precision gemstone grading and certified gemstone grading are done with a microscope and other tools.)
LENS SPECIFICATIONS:
10x - 10 power magnification
5/8 inch - 15.8 mm diameter
1 inch - 2.5 mm focal length
PRICE: Medium to high - about $42 - $58.
CONCLUSION: Among the best available.
A SECOND REVIEW:
The Bausch and Lomb 10x Hastings Triplet is a great little hand lens for anything that requires 10X magnification for viewing.
I use this hand lens mainly for looking at hand samples in the field and the lab/classroom.
Compared to the old $5 hand lens that I had previously, the Bausch and Lomb has a much clearer field of view and does not hurt my eyes. The old lens would focus in the center of the lens, yet remain blurry around the edges. On the other hand, the B and L has a very clear view across the whole lens that will not strain your eyes.
Overall, I think that the B and L is a great choice for viewing rock/sediment samples or any other 10X work. It appears to be well constructed; I have yet to have any problems. The casing around the lens is plastic. The hand lens is held together by a rivet which will not loosen like a screw. However, I sometimes wonder if it did loosen somehow, then there would be no way for me to tighten it back up....I have yet to have this problem though.
One last plus is the hole to connect the hand lens to a lanyard. This is very important for me because I use the lens in the field and between use I am often hiking around, so it is handy to have it on command around my neck.
Amazon has this B and L Loupe at a best price. Just CLICK HERE -- BAUSCH and LOMB (B and L) HASTINGS TRIPLET LOUPE MAGNIFIER -- MODEL 81-61-71
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