AMERICAN READY RECKONER, 1850
- Inventor
- Unknown
- Invention date
- Unknown
- Manufacturing date
- 1850 env
- Manufacturing location
- New York, USA
- Manufacturer
- Fischer & Brother
- Dimensions
- L 8 H 2 W 13
- Reference Number
- 142
History and Functionality
“An assistant for merchants, mechanics and farmers.”
The objective of this scale is to give rapidly the result of multiplying a quantity by a unit price in order to get the total price.
The unit price can vary from ¼ of a cent up to $10 USD.
The quantities vary from one unit to 1,000 units.
Each page is assigned a unit price. To calculate a total just choose the page corresponding to the unit price and read the result on the line of the quantity sold.
