Hourglass Pocket Puzzle Variety Box Modern thermometers may be more

Modern thermometers may be more accurate but the visual magic of Storm Glass has been enchanting weather prognosticators for almost 200 years

and two six-hour beeswax candle sticks (though any type of candle may be substituted)

What you can't see in the photos is the wickedly clever and deeply satisfying solution to this puzzle

you might fidget all day without unlocking the secret

this bookmark is a sliver of wonder that hides between the pages to save your place in any story

Hourglass Pocket Puzzle Variety Box Modern thermometers may be moreThis puzzle is made by combining two pieces each of two similar, but slightly different shapes. They are carefully calculated, with tricky movement added. It is impossible to unravel with one linear movement. Designed by Korean puzzle creator JinHoo Ahn. Made by Hanayama.