What is another word for pinwheel calculator?
Pronunciation: [pˈɪnwiːl kˈalkjʊlˌe͡ɪtə] (IPA) 
Pinwheel calculators, also known as rotary calculators or Odhner calculators, have been used for decades to perform basic mathematical operations. These machines utilize a series of small, interlocking wheels or pinwheels to calculate numbers faster than a person could by hand. While the term "pinwheel calculator" is commonly used, synonyms can be found in different countries and languages. In the United Kingdom, these machines are called "arithmometers," while in Japan they are known as "soroban." The term "comptometer" is also sometimes used to refer to pinwheel calculators, particularly those produced by the Felt and Tarrant Manufacturing Company. Regardless of the name used, pinwheel calculators are a valuable tool that have helped countless individuals make complex calculations in less time.
