Rare Nicholson Advertising Thermometer Metal Sign w/ Hand File Image England 15”

Rare Nicholson File Company England Advertising Thermometer Metal Sign Featuring an Image of a Hand File. Sign measures just shy of 15” by 3-5/16” inches. Fahrenheit reading goes as high as 140 degrees on the sign. Top edge reads Made in England while bottom edge reads 12 MB. Temp gauge seems fairly close to actual ambient temperature, maybe slightly over by 2 degrees. Back side is Black version.