Birdwatch Note Rating
2025-01-31 18:13:16 UTC - NOT_HELPFUL
Rated by Participant: 6A1C9AFB9F47C0FFE0E1DB23048EA515591282BFF748119FA9BDF32C195E0F56
Participant Details
Original Note:
The device shown is a LEVEL, it shows if the surface it is placed on is even side-to-side to the local gravity field. To determine if a surface is FLAT, one should use a Kemet Flatness Gauge* or an interferometer or autocollimator.** * https://www.kemet.co.uk/products/flatlapping/flatness-gauges ** https://www.mitutoyo.com/webfoo/wp-content/uploads/15004A.pdf
All Note Details