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)
Step 2: PREPARE THE STICKS
-Cut one of the stick in half and sharpen one edge;
-draw a line in the exact middle of it (lengthwise);
-draw a line in the exact middle of the intact stick (crosswise);
-make 2 holes at the edges of the intact stick and one in the side of the half stick (like in the photo).
Step 3: GLUE THE STICKS
Glue the sticks perpendicular to each other like in the photo.
Step 4: PLACE THE CARABINER
Place the ring in the hole of the short stick and the carabiner hooked into the ring.
Step 5: PLACE THE PEGS
place the 2 pegs in the holes of the long stick
Step 6: PLACE THE NAIL
place the nail in the middle of the intersection of the 2 sticks
Step 7: PLACE THE WEIGHT
Tie the iron ring to the thread like in the photo and hang it up to the nail.
Step 8: PREPARE THE WEIGHT MEASURE
You should find some bolts of different weight: at list one of 1gram, two of 2 grams and one of 5 grams (so you can arrive to all the measurements until 10 grams).
Otherwise you can make small balls of clay of different weight.
Step 9: PLACE PLASTIC BAGS
On one side of your scale you should clamp a small bag with your weight measure, and on the other side the other bag with inside the thing you need to measure.