For your consideration is a Vintage Illinois Oil Products Thermometer Rock Island Advertisement Hanging Very clean thermometer and appears to be accurate. It contains a non hazardous safe material (such as alcohol or toluene). Please look at all of the photos carefully as they are part of the description and show condition and what’s included. Please check out my other items I have lots of cool vintage antique Victorian primitive Collectibles for sale. Thank you for your interest and good luck..