Focusing sticks

Applause IconApr 10, 2023 • 11:59 PM UTC
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Old, but still curious.

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The paper wedge was difficult to precisely adjust, back-and-forth, particularly with a phone attached. These sticks worked better for me, split from cedar door shims. Also for glass slides with glass cover slips, I cutaway the foldscope a bit to make more room and keep the specimen right against the lens.

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