2 1/2" x 6 1/4" with the mounting brackets at the top and bottom extending the piece to approximately 7 1/2". Metal thermometer advertising People's Tobacco Warehouse in Somerset, KY, functioning wall thermometer exhibits foxing and some oxidation, particularly on the reverse.  The mercury thermometer is firmly attached and fully functional (though it's 69 degrees in the office as this is being written, and the thermometer reads 75).  Of interest to hobbyists due to the People's Tobacco Company's issuance of the T216 baseball card sets.