Tracking Temps. If you spend a lot of time in your outdoor space, The Contra Thermometer from Infinity Instruments is the perfect addition to a patio or garden. The combination clock and thermometer is great for keeping track of time and temperature, and moss green is a perfect neutral for outdoor use. At just 16" round, this piece works well in all spaces. 16" round. Thermometer. Moss green resin case. Glass lens.