To provide an outdoor apparatus provided with a vacuum gauge capable of reliably measuring the degree of vacuum of a vacuum part without being affected by weather even in the case that the vacuum gauge is mounted to the apparatus installed outdoors.

The outdoor apparatus 1 is provided with both a case main body 3 in which the vacuum part is formed inside and the vacuum gauge 6 mounted to the outside of the vacuum part in the case main body 3 to measure the degree of vacuum of the vacuum part. The case main body 3 is provided with a gauge housing part 4 for housing the vacuum gauge 6. The gauge housing part 4 is made of a material having a light shielding property and small moisture permeability and provided with a cover 42 capable of being attached to and removed from the case main body 3. By fixing the cover 42 to the case main body 3, the case main body 3 and the cover 42 form the gauge housing part 4 in a sealed state.

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