I use a digital one that was designed for light office use (up to 5 lbs), bought from office supply store many years ago & still works fine. I just subtract the weight
of the empty container I put the snake in after weighing both together. My scale has a switch that flips between oz. or grams. It's always been quite accurate- I use
for mailing too & always the same as the post office figures. Bathroom scales are not accurate enough...unless maybe you've got a very pricey one?