| 1. | I never got around to looking at them with a high-powered hand lens.
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| 2. | For some, it also takes a magnifying glass or hand lens.
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| 3. | Geology in those days was just hammer and hand lens affair.
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| 4. | The oil dots are transparent and visible with a hand lens.
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| 5. | Paratracheal parenchyma is sparse, as incomplete narrow borders, not clearly visible with hand lens.
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| 6. | The redberry mite is microscopic, requiring at least a 20?hand lens to detect.
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| 7. | Often, however, a simple hand lens may reveal the cause of a particular problem.
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| 8. | Scientists liken the instrument to a field geologist's hand lens.
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| 9. | Oil dots are easily noticed with a hand lens.
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| 10. | Oil dots are not visible with a hand lens.
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