RT Journet London Vintage Handheld "Geometrical" Dexterity Puzzle model plane propeller in thinking about the history

in thinking about the history and future of factory labor in this country

One hair line crack visible coming in from the edge on the reverse side

Armour became a national operation and one of the country's largest businesses

Each approx 2 1/2" t x 1" d and both in very good condition

RT Journet London Vintage Handheld "Geometrical" Dexterity Puzzle model plane propeller in thinking about the historyGreat graphics on this one, and I'm a sucker for geometrical shapes (I can never find geometrical solid blocks anymore, but this dexterity puzzle reminds me of them.) Produced by RT Journet London c. 1920s or so I believe. It's a challenge, but I do believe achievable! Perhaps just the right gift for one's favorite math teacher who needs distracting! 5" x 4 1 8" x 3 4". Good condition with light general wear and age.