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AcuMath 400

• Type: Simplex Trig (S and T on stators)
• Size: 10 Inches
• Material: Plastic
• Scales:
  • Front: S K A [ B CI C ] D L T
• HvH: 5

With vinyl slipcase. S and T marked on body, perhaps inspired by the Darmstadt system. S calibrated against A, T calibrated against D. No scales on reverse. Compare to the Dietzgen N1767 "National"

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