Crazy Calculator – DIY Wooden Math Machine | Add, Subtract, Multiply & Divide with Gear-Driven Fun
Non-returnable
Price:
Rs.314.00 Rs.999.00 (69% Off)
Discover the magic of math with the Crazy Calculator – a DIY wooden adding machine that lets you add, subtract, multiply, and divide using gear racks and a stylus. Inspired by a vintage 1846 design, this hands-on math tool is perfect for curious minds and STEM enthusiasts.
Choose Quantity:
Share:
Product Information
Product Details
Crazy Calculator is a DIY wooden model kit based on an additor that was invented by a St. Petersburg music teacher, Heinrich Kummer, in 1846. Its simple design and compact size made it a popular mathematical tool in its time.
It is used to add and subtract numbers. To do this, the user enters a number value using the stylus, then uses the stylus to enter a second number. The device then shows the result of the desired mathematical operation, according to where the second number was entered (top row for addition, bottom row for subtraction). But this Calculator is not limited to addition and subtraction—you can also use it to multiply and divide.
| Weight | 400 g |
|---|---|
| Dimensions | 30 × 22 × 5 cm |
