Knex Abacus
Intro: Knex Abacus
The abacus is an easy to make calculator. I'm entering this in the Technology contest because it saves money because you don't need to buy a calculator and save money and natural ores. Look at the pictures.
4 Comments
famousguy 12 years ago
Skill Master 12 years ago
Skill Master 12 years ago
~KGB~ 12 years ago