This is a really pocket-sized scale. Is super easy and fast to do and cheap.
I find it really useful when I need to weight small amount of things, like copper or sulfur for disinfect my plants.
Step 1: WHAT YOU NEED
-2 popsicle stick;
-2 pegs (like the ones in the photo);
-1 small carabiner;
-1 small keys ring;
-a piece of thread;
-1 short nail;
-1 small iron ring (I used one from the valve of the inner tube);
-2 small plastic bag of the same size;
-some bolts of different weight (1,2,5 grams)