Review on Icstation BF350 Strain Pressure Sensor: Precise and Reliable Sensing for Strain and Pressure Measurements by Dave Russell

Great deal on tiny strain gauges. You are tiny! Difficult to solder without melting and tricky to glue if you have thumbs, but they all seem to be within a tolerance of about 1% of the stated neutral resistance and they really do what strain gauges are supposed to do. . 4 of these in a Wheatstone bridge configuration on some load cells work well with cheap standard load cell amplifiers that you can easily find.