Slide rule workshop U

Mystery slide rule (via Jacques Perregaux)

Unknown Slide Rule “H-P-S”

Click images for magnification

Front Back Box Cross section Cursor center Cursor left Cursor right Front center Front left end Front right end Upper side Upper side center Upper side left end Upper side right end Lower side center Lower side left end Lower side right end

Data:

  • Dimensions: Length = 315 mm, Width = 53 mm, Thickness = 7.8 mm, Weight = 212 g
  • Description: Closed body, slide, 3 cursors, cursors left and right with 8 hairlines, center cursor with 9 hairlines, hairlines in black and red, no other marks on cursors.
    all cursors with windows on upper and lower side-faces, with one or several hairlines.
  • Scales: As per images.
  • Materials: Body made of white plastic, Cursors made of Plexiglas, metal screws, steel springs
  • Box: Maybe not original

Questions: