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Adding an Off-Axis Guider to my Set-up
OptiVISOR Replacement Parts for Headband Magnifier
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Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20 Focal Length : Health & Household
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Donegan OptiVISOR Magnifier #4 DA-4 Glass Lens
Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X