Birdwatch Note Rating
2025-01-31 20:02:52 UTC - NOT_HELPFUL
Rated by Participant: 0538D1DFD6E0BFC7F79B82AE90D863A11086D7A520D6576DCFAD407426E16301
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