Antique Wooden Thermometer Advertising Robbins Islands Oysters

A hard to find wooden thermometer advertising Matthew J Ryan oyster dealer at Dock Street Market in Philadelphia PA. 
They were sole dealers for the famous Robbins Islands oyster in that area. Robbins or Robins Island is located in the Peconic Bay out on Long Island NY. 
It stands about 14 inches tall. Seems to be close to accurate on the temperature.
A really nice item to add to your oyster can collection.