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History of Math Sign (RR)
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7/12/2004
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Waywisers (JH)
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6/1/2004
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Water Clock (JH)
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6/1/2004
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Planimeter 1 (JH)
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6/1/2004
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Planimeter 2 (JH)
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6/1/2004
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Planimeter 3 (JH)
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6/1/2004
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Polyhedra (JH)
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6/1/2004
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Mobius Strips (JH)
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6/1/2004
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Curvimeter (JH)
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6/1/2004
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Henrici Harmonic Analyser 1 (JH)
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6/1/2004
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Thompson Harmonic Analyser (JH)
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6/1/2004
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Henrici 2 Thompson 2 (JH)
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6/1/2004
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Platonic Solids (JH)
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6/1/2004
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Difference Engine No. 1 (CD)
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6/1/2004
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Babbage Diff Engine Sign (CD)
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6/1/2004
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Babbage Difference Engine (CD)
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6/1/2004
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Babbage Difference Engine No. 2 (JH)
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6/1/2004
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Babbage Mill (JH)
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6/1/2004
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Schutz Difference Engine (JH)
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6/1/2004
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Tally Sticks (JH)
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6/1/2004
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Napier Bones Sign (JH)
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6/1/2004
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Napier Bones 1, for Base 60 (JH)
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6/1/2004
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Napier bones 2 (JH)
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6/1/2004
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Napier Bones 3 (JH)
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6/1/2004
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Calculator Model with Carry (JH)
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6/1/2004
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Polyhedra of Boyle (JH)
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6/1/2004
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Archimedean Screw (JH)
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6/1/2004
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Diagonal Machine Sign (JH)
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6/1/2004
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Diagonal Machine (JH)
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6/1/2004
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London Eye Model (JH)
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6/1/2004
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Apollo Capsule(RR)
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6/1/2004
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