how to make a Speed-meter without a progressbar

I have a proyect to make a speedTest with a speed-meter o tachmeter fuctional in real time,but i can’t found a library with explain examples for how to used….

speedtest-cli gives different results than speedtest.net website

I use speedtest-cli to automate speed tests.

speedest.cli gives different results than speedtest.net website

I use speedtest.cli to automate speed tests.