A jigger that allows an economical use of various liquids. A simple pressure on the cap is sufficient to pump a small quantity and bring it to the hole located under the lid. Only the necessary quantity being pumped, and, as the liquid cannot evaporate or be spilled, there is no waste. A precision pipe hermetically closes the liquid jigger and so consents to avoid introduction of impurities or the exchange with toxic vapours. The polyethylene body is resistant to acids and to solvents. The jigger is therefore ideal for acetone, paint, hydrochloric or sulphuric acid, Freon, trichlorethane, alcohols and disinfectants.