You are Buying (1) Murphy 25VWCG-30 Series Water Column Vaccum, Air Filter Restriction Indicating Gage/Limit Swichgage. 0-30cm. Please note that the box has some dirt and writing on it. Box was opened for photos only. Swichgage is new with with original packaging, instructions, and parts. Box was sealed before opening for photos. Please visit our store for similar listings.