If you don’t have a precision scale, here are some indicative measurements (volume to grams) for some basic confectionary ingredients.
Baking powder: 1 teaspoon equals 5 gr.
Butter: 1 cup equals 230 gr.
Cocoa: 1 cup equals 85 gr. / 1 tablespoon equals 10 gr.
Corn flour: 1 teaspoon equals 5 gr.
Cream: 1 cup equals 240 gr.
Flour: 1 cup equals 130 gr. / 1 tablespoon equals 10 gr.
Honey: 1 cup equals 340 gr. / 1 tablespoon equals 20 gr.
Lemon: 1 cup equals 250 gr. / 1 tablespoon equals 20-25 gr.
Milk: 1 cup equals 230 gr.
Melted Chocolate: 1 cup equals 170 gr.
Oil: 1 cup equals 210 gr.
Salt: 1 tablespoon equals 20 gr.
Caster Sugar: 1 cup equals 200 gr.
Brown Sugar: 1 cup equals 220 gr.
Icing Sugar: 1 cup equals 115 gr.
Water: 1 cup equals 200 gr.