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Mike Frey Slide Rules

Slide Rules and Other Things

Keuffel & Esser 4071T 10″ Polyphase Duplex Trig

  • Clamshell Cursor
    • 4071T 10″ Polyphase Duplex Trig -77
  • Column Cursor
    • 4071T 10″ Polyphase Duplex Trig -99
  • All Glass Cursor
    • 4071T 10″ Polyphase Duplex Trig -82
Mike Frey Slide Rules
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