Timetable or rent rule for calculating the number of days for storage charges, as used by the dock companies, by Dring and Fage, Tooley Street, London, 16 1/2" x 2 1/4", c. 1850-1860
The rule allows the number of weeks to be read off between two dates up to two years apart.
Details
- Category:
- Mathematics
- Object Number:
- 1954-305
- Materials:
- mahogany (wood) and brass (copper, zinc alloy)
- Measurements:
-
overall: 10 mm x 60 mm x 420 mm, 0.29 kg
- credit:
- National Maritime Museum (Gabb Collection)