Here we have the best pocket-sized gadget to check herbs’ weight before smoking. It’s necessary to insert the limited amount of it in a rig, so try this WeighMax BX-650g which will give you an accurate measurement. Usually, it’s used for weighing precious metals, but you can use it for measuring the number of herbs. It can measure up to 650 grams in different units, depending on the unit used in your area. The LCD has a luminescent backlight and an auto shut-off feature, which will help save battery when not in use. This small size gadget is easy to carry around and use; you can use it whenever you want to measure the herbs to be inserted into the rig.