La Crosse Technology WT-3181P 18" Outdoor Atomic Wall Clock with Temperature/Humidity 030721770135 Available in 6 sizes from

Available in 6 sizes from 15-inch to 20-inch

The cap may have a check-valve that lets air in or out depending on the air pressure inside the tank

and always return to its original shape

not the entire fuel line assembly

La Crosse Technology WT-3181P 18" Outdoor Atomic Wall Clock with Temperature/Humidity 030721770135 Available in 6 sizes fromBrand La Crosse Technology Model WT 3181P Color Silver Pewter Size One Size Sets automatically by radio signal to atomic clock for accuracy Automatically adjusts for daylight savings time Select from 1 of 4 U. S. time zones Includes analog thermometer and hygrometer 18 inch diameter; runs on 1 AA battery (not included); 1 year warranty This 18" outdoor clock sets itself to the U. S. atomic clock in Boulder, Colorado, thus maintaining absolute time