Decode the old math of money with Rowlett’s Tables of Interest
This edition shows how 19th‑century financial calculations were done, using diagrams and rules to compute interest, days, and due dates.
This book explains practical methods used long ago to handle notes, drafts, and discounts. It shows why months are treated as thirty days for some calculations and how fractions were handled. It also covers how to determine maturity dates, grace days, and carry‑over into a new year, all without modern calculators.
- How interest and discounts were historically calculated using month‑of‑thirty days conventions
- Ways to count days between dates and determine due dates quickly
- How to handle grace days and leap year adjustments
- Context on early banking practices and the use of historic tables
Ideal for readers of financial history, antique math, and anyone curious about early methods of calculating interest and maturity dates.