Reddit reviews Premium Spring Balance, 0-500g / 0-5N - High Resolution, Dual Transparent Scale, Newtons & Grams - Zero Calibration Capability - Acrylic Body, Superior Quality & Finish - Eisco Labs
We found 2 Reddit comments about Premium Spring Balance, 0-500g / 0-5N - High Resolution, Dual Transparent Scale, Newtons & Grams - Zero Calibration Capability - Acrylic Body, Superior Quality & Finish - Eisco Labs. Here are the top ones, ranked by their Reddit score.
Premium quality spring balance with 0-500g and 0.1N capacitySuperior quality & finish, dual transparent scale - measures in newtons and gramsUser friendly zero-point calibration capabilityPremium quality. Great for physics demonstrations and experimentsSpring balance measures 9" long and 1.4" wide
The simplest method is to use a spring scale like one of these:
https://www.amazon.com/dp/B00ARJOS8Y
If you know how to use an Arduino, then you can use these:
https://www.amazon.com/CHENBO-Weight-Weighing-Pressure-Arduion/dp/B078JX3KJN
Our shop sells fill stations, it would be best to get a bulk CO2 tank to fill from. Also a fish scale as u/phantomjm mentioned.