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Retrotech: microscope slide OC
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Retrotech: microscope slide OC output 4 yards from laser
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Retrotech: microscope slide OC in action
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Retrotech: 3 slide OC before good alignment on wall target
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Retrotech: 3 slide OC before good alignment with razor
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Retrotech: 3 slide OC after better alignment and more even slide spacing
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Retrotech: 3 slide OC on razor after improved alignment
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Retrotech: 3 slide OC improved alignment on charred wood
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Retrotech: 3 slide OC with better alignment on charred cork
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Retrotech: 3 slide OC on charred cork after improvement in alignment
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Retrotech: 3 slide OC using ordinary picture frame glass
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Retrotech: 3 slide OC with setup