a spring scale to measure forces

including: 3 sticker sheets

From SmartLab Toys

I wish I was that cute

True Genius Grecian Trick Lock Puzzle chemical-free a spring scale to measureStep into ancient history with the True Genius Grecian Trick Lock Puzzle! Inspired by legendary inventor Theodorus of Samos, this brain teasing puzzle recreates a lock so ingenious that even master thieves of antiquity couldn't crack it. Crafted from zinc alloy and copper, this clever puzzle challenges your problem solving skills and makes a stunning display piece for puzzle enthusiasts and history buffs alike. From Project Genius, for ages 8 adult