KitchenCraft 2cm Plastic Wall Thermometer with Built-in Hook for Easy Hang
It even has a built-in hook, so it’s easy to hang up on any wall. Made of durable plastic with an easy-read gauge. Temperature range: -20 to 50 deg. Celsius / -2 to 120 deg. With a built-in hanging loop, so it's easy to fix to any wall.