Its origin goes back some 500 years
An early, simple pocket calculator from an era when 50 years were akin to perpetual
Intriguing, also effective... Calculate the day of the week for any given future date, within a 50-year span
To use, simply rotate dial until the selected year lines up with the selected month
Calculate the day of the week for any given future date, within a 50-year span

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.7 inch
Height : 1.02 inch
Length : 3.78 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 9.12 ounce (View shipping rates and policies)

ASIN : B00O4K78MK