Where can I put the hole instrument?

Keep it in a dry and ventilated place. The hole instrument should be placed indoors to avoid direct sunlight and high temperature, so as not to affect the use effect of the hole instrument. Put it in a dry and ventilated place to avoid damage to the hole meter caused by humid environment. The insight instrument should be placed in a safe place to avoid being hit, so as not to damage the internal structure of the insight instrument. Kong Yi should be kept indoors to avoid being exposed to the outside, so as not to be affected by bad weather.