A. M. Maurand
- occupation:
- Inventor
- Nationality:
- French
Ready reckoner 'Prompt' calculator, 19th century. A ready reckoner invented by A M Maurand for converting between British Imperial Measures and the French Metric System
Ready reckoner 'Prompt' calculator, 19th century. A ready reckoner invented by A M Maurand for converting between British Imperial Measures and the French Metric System