I believe that the tech you mention is the same tech as used by the flat-earthers in Behind The Curve in the $20k gyroscope they bought, to try and prove that t

I believe that the tech you mention is the same tech as used by the flat-earthers in Behind The Curve in the $20k gyroscope they bought, to try and prove that the Earth did not rotate (except they found it picked up a 15-degree-per-hour drift, debunking themselves, so then doubted the technology, heh) [1]. But, aside from the laser/fibre-optic tech, there are also MEMS [2] gyroscopes also — which is almost nanotech IMO — which are used as sensors in modern phones/tablets, and also on drones (to assist with navigation), plus various other robotics uses, and more. MEMS gyros — often with an accelerometer (aka IMU / inertial measurement unit) and maybe a magnetometer (compass) — can be bought from folk such as Adafruit [3], SparkFun, etc. (I've got a few different ones myself), and hooked up to e.g. an Arduino or similar MCU (or indeed anything else that speaks can speak the appropriate protocol, e.g. I2C/SPI/etc depending on the board in question). Hmm, just looked for a good image of how a MEMS gyro works, and didn't come up with what I was looking for / recall seeing before (I'm a bit pushed for time), but there's a diagram on this WP page [4]. Edit: ah, here's a better diagram [5] [1] https://www.triplem.com.au/story/flat-earthers-spend-20-000-trying-to-prove-earth-is-flat-accidentally-prove-it-s-round-129953 https://www.triplem.com.au/story/flat-earthers-spend-20-000-... [2] https://en.wikipedia.org/wiki/Microelectromechanical_systems https://en.wikipedia.org/wiki/Microelectromechanical_systems [3] https://www.adafruit.com/category/521 https://www.adafruit.com/category/521 [4] https://en.wikipedia.org/wiki/Vibrating_structure_gyroscope#MEMS_gyroscopes https://en.wikipedia.org/wiki/Vibrating_structure_gyroscope#... [5] https://www.researchgate.net/figure/Block-diagram-of-the-MEMS-gyroscope_fig1_266022526 https://www.researchgate.net/figure/Block-diagram-of-the-MEM...