STAEDTLER DRAFTING HEAD หัวกระดานเขียนแบบ รุ่นปรับได้ MARS 660

899 ฿

  • For use with the drawing boards 661 A3 and A4
  • Single-handed use
  • Stop/Go push-button for easy setting at desired angle and freewheeling
  • Two transparent rulers with double sided, opposite-running scales
  • Parallel guide lines serve as hatching aid
  • Opposite-running protractor scales from 0 – 90° with additional marks at 7° and 42° for dimetric projection
  • Automatic settings at 15° intervals
  • Uninterrupted drawing of right angles possible

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