mapsontheweb:The Plus Four Wristlet Route Indicator, a British product from the 1920s,is a scroll-ma
mapsontheweb:The Plus Four Wristlet Route Indicator, a British product from the 1920s, is a scroll-map navigator in the shape of a watch. It came with tiny interchangeable instructions that you scrolled manually to see which roads to take when driving. -- source link
#delightful#maps#watches#1920's#20th century