Process operator
Archimedean spiral
Spiral strip cut flat from plate (r = a + b·θ) — flat spiral, volute or screw plate.
Members only
The calculator itself is locked
Create a free user account to unlock all articles, calculators, templates and range — and get access to quizzes and classes. It takes less than a minute: name, email and a password. No payment card.
Want to try something first? See what you can use without an account — the junior zone, the encyclopedia, the videos and more.