The double jigger with internal measurement lines has markings inside the cup so you can fill directly to the amount your recipe calls for. The lines are labeled at 1/4, 1/2, 3/4 and 1-1/2 ounces, which helps you measure more precisely than eyeballing a pour.
The marked amounts are 1/4, 1/2, 3/4 and 1-1/2 ounces. These increments cover common cocktail specs and make it easy to scale up or down without switching tools.
The double jigger with internal measurement lines is best for measuring alcohol and mixers when you want consistent results. It is especially helpful for home bartenders who are following recipes, batching a favorite drink or testing new combinations.
Cocktails rely on balance, and small differences in volume can change the flavor. Using a jigger keeps proportions steady from drink to drink, so a classic build or a new recipe tastes the way you intended.
Yes, the double jigger with internal measurement lines can be used to measure any liquid, not just spirits. It is great for citrus juice, syrups, shrubs and other mixers where accuracy makes a noticeable difference.