# Slide-rule

Free to read here, from Project Gutenberg.

3 titles; page 1 of 1.

- [On the History of Gunter's Scale and the Slide Rule During the Seventeenth Century](https://invisiblenetwork.ai/books/gutenberg/42216) by Florian Cajori
- [The slide rule](https://invisiblenetwork.ai/books/gutenberg/75904) by Charles N. Pickworth
- [Instruction for Using a Slide Rule](https://invisiblenetwork.ai/books/gutenberg/20214) by W. Stanley