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Retro Solar Calculator Ruler in Faux Leather Case

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Great piece of retro office equipment. Ideal for school, workshop and office alike. Small solar panels power the calculator, works perfectly. The ruler measures in both inches and centimetres and all the markings are still clear and easy to read. There is a conversion table which lists all the conversion factors for different units of measurement. There is also a digital clock which needs a small watch battery (available cheaply at any jewellers). The sleeve that holds it is made of a fabric-backed leatherette material which is really soft to the touch and flexible, with nice pinkish brown stitching around the edges.

The front of the ruler is marked:
Model 629, Calculator Ruler, Solar Cell.

Conversion Chart for the following units:
in / cm
ft / m
mile / km
sq in / sq cm
sq ft / sq m
usoz / c.c.
usgal / litre
lb / kg
oz / g
farenheit / celcius

The back of the ruler is marked:
Made in Hong Kong,
Patent Nos. 1007807, 1013163, 1013164, 1013135, 1013166, 1013167, MR 20573

And a sticker that says: Q.C. Passed, 1.

There are two chips to the edge marked with cm's (still fine for rough sketches etc), the top edge (marked with inches) provides a nice edge for perfect lines. Also a few scratches to the brown finish around some of the calculator buttons but nothing that detracts from the retro charm of the piece.

Please contact for custom shipping quotes.

Retro Solar Calculator Ruler in Faux Leather Case


  • Vintage item from the 1970s
  • Materials: plastic, metal, solar cell, lcd, lcd screen, fabric, leatherette, faux leather, cotton stitching, cotton thread
  • Ships worldwide from Exeter, United Kingdom
  • Feedback: 69 reviews
  • Favorited by: 6 people