The manufacturer calls the 00919 a 14-inch clock, but that's actually rounded up to the next whole number. We actually measured it at 13-1/2 inches (343 mm) in overall diameter, with a face diameter of about 10-1/2 inches (267 mm). The big, bold hour numerals are 1 inch (25.4 mm) tall for easy viewing. The analog thermometer reads from -40°F to +140°F, and the analog hygrometer indicates relative humidity from 0 to 100 percent. The round dials of both the thermometer and hygrometer are 2-1/4 inches (57 mm) in diameter. 

The 00919 copper clock uses a highly accurate quartz movement. You simply insert one AA (1.5V) battery, turn a knob to set the time, and that's all there is to clock setup. The battery is not included and must be obtained separately. We recommend using an alkaline battery. Although expected battery life is not specified, we believe from our experience with this type of clock that the battery should last a year or more.

Note on Using the 00919 Outdoors: When the temperature is expected to fall below freezing, you may want to bring the 00919 indoors. This is because in low temperatures, an alkaline battery may not provide enough current to power the clock motor, in which case the clock will lose its accuracy. If you wish, you may want to try replacing the alkaline battery with a lithium battery and see how the clock operates in the cold. Lithium batteries generally work down to about -40°F/C.

If your home or office decor is traditional and you're looking for a medium-size analog wall clock that also tells you the temperature and humidity, you should definitely take a good look at the Acu-Rite 00919 Tritan Clock with Thermometer and Hygrometer.

Features:

• Highly traditional styling.
• Clock case is metal with a brushed copper finish.
• Face is off-white with black hands, dial pointers, numerals, and other graphics.
• Copper-shaded areas on thermometer and hygrometer dials indicate ranges (such as Cold and Humid).
• Suitable for outdoor use in a sheltered location.
• Analog thermometer indicates temperatures from -40°F to +140°F.
• Analog hygrometer indicates relative humidity from 0% to 100%.
• Powered by one AA (1.5V) alkaline battery (not included). Expected battery life is not specified, but typical battery life in this type of clock is 1 year or more.

Dimensions:

• Overall Diameter:
  13.5 inches (343 mm)
• Face Diameter:
  10.5 inches (267 mm)
• Thickness:
  2 inches (51 mm)