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Gem Polarized Variable Vectographic
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Vortex Polarized Variable Vectographic
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Gem Variable Polarized Vectograph with Fixation Disparity Target
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Variable Vectogram (Quoits Vectogram)
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Fixed Vectogram (Figure 8)
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Variable Vectogram (Spirangle Vectogram)
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Variable Vectogram (Clown Vectogram)
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