I bought 175 g pack of salami which had 162 g of salami as well.
While it’s hard to prove that it’s been done correctly a lot of scales do come with calibration weights.
You can also weigh water, 100ml weighs 100 grams
DONT FORGET TO SUBTRACT THE WEIGHT OF THE BEAKER
But how do you know that your measurement of 100mL of water is accurate?
There are no moving parts so there should be very little drift.
Just use a scale and measure 100g of water
Just weigh it, duh.
A lot of cheap kitchen scales are also just crap. Talk to your local drug dealer about what brand of scale might be right for you.
My drug scale is my kitchen scale is my drug scale
Why I like my mechanical one. I can recalibrate it myself. Heck I taught my 10 year old to do it, it isn’t rocket surgery.