The other patent: the Exactomatic. The Cricket caliber was also related to another exclusive development by the Manufacture Vulcain, an innovation patented in 1946 as the Exactomatic. The purpose of the Exactomatic principle is to equalise the friction on the balance-wheel axis in all positions by modifying the Incabloc endstones. This provides a more regular amplitude. So the Exactomatic principle provides greater accuracy and better regularity in the operation of the watch while, it is being worn. This sparked even greater interest by connoisseurs in all of Vulcain's calibres.