The Hastings Triplet Hand Lens is the finest hand lens made by Bausch & Lomb, is highly corrected for spherical and chromatic aberration. Their compound lens is formed from three separate lenses bonded together and provides very distinct images with no color distortion. A swing-away, nickel-plated case protects the lens and serves as a handle.
| ASC Scientific Part Number | Power | Focal Distance | Lens Diameter | Bausch + Lomb Part Number |
| HT-07X | 7X | 1-1/2” | 3/4″ | 816168 |
| HT-10X | 10X | 1” | 9/16” | 816171 |
| HT-14X | 14X | 3/4″ | 7/16” | 816175 |
| HT-20X | 20X | 1/2″ | 5/16” | 816181 |
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