Gauge for pneumatic spearguns,made entirely in Italy of Cressi Sub Company founded in 1946 manufactures & sells underwater fishing equipment: Bow tridents harpoons knives buoys diving masks snorkels zones gloves & socks spear diving flippers air & rubber rods Tahiti & tires with air weapons snorkeling parts & kits rods gun holsters flashlights & lanterns surface diving goggles and bathing caps protective travel bag dive diving Bottle Line cords & weights diving spearfishing reel,eccmanship particular attention to the very good performance of the products, which has made the company one of the best in underwater construction equipment in Europe. The company Cressi Sub using high quality raw materials assures responsible for strength & impeccable appearance of its products.