Safari Ltd Solar System Metric Conversion Ruler

SKU: SAF100319



  • This Solar System ruler features the sun, eight planets, and the asteroid belt. The planets are pictured in order, in realistic colors, along with brief information about the size and temperature range of each planet. Sorry, Pluto, dwarf planets not allowed.
  • Characteristics: The solar system ruler includes both metric and standard scales, allowing easy conversion. Educational facts about the sun, planets, and asteroids are included below engaging pictures.
  • Size and Color: The metric edge of this ruler includes centimeters and millimeters, while the standard edge allows measurement to the sixteenth of an inch. True-color pictures of the sun and planets add to the realism and educational value.
  • The Solar System is part of the Safariology® collection
  • All of our products are Non-toxic and BPA free.


Mercury, Venus, Mars, Jupiter, and Saturn are easily visible to the naked eye, and that was especially so in antiquity when no light pollution existed. Those planets, then, were studied even by the Babylonians thousands of years before Christ. Distant Uranus was discovered by Hershel in 1781. The planet behaved oddly though, leading Johann Galle to the discovery of Neptune in 1846. All the planets are named after Greek and Roman deities, taking their names from their primary features. Mercury, for example, revolves around the sun in just 88 days, so it was named after the speedy messenger god. Bright Venus was named after the god of beauty, while blood-red Mars was named after the god of war. Gigantic Jupiter, king of the planets, was named after the king of the gods. Saturn, slow to move through the sky, was named after the god of agriculture. Distant, ephemeral Uranus was named after the god of the heavens, and Neptune appears in a deep blue color, so it was named after the ocean god.

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