Template:Did you know nominations/Rolling straight-edge
- The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
The result was: promoted by The Squirrel Conspiracy (talk) 23:13, 31 July 2020 (UTC)
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Rolling straight-edge
An early rolling straight-edge in California
- ... that the rolling straight-edge, one of the earliest means of measuring road surface regularity, is still used in Britain today? "One of the earliest approaches to measuring a profile property directly to obtain roughness was the rolling straightedge," from: Transit Pricing and Performance. Transportation Research Board, National Research Council. 1986. p. 27. ISBN 978-0-309-04072-3. "An irregularity is a variation of not less than 4 mm or not less 7 mm of the profile of the road surface as measured by the rolling straight-edge set at 4 mm or 7 mm as appropriate, or equivalent apparatus capable of measuring irregularities within the same magnitudes over a 3 m length" from the current (2016) national specification for highways: "Series 700 Road Pavements - General" (PDF). Manual of Contact Documents for Highway Works. 1: Specification for Highway Works: 3. Retrieved 12 July 2020.
Moved to mainspace by Dumelow (talk). Self-nominated at 12:41, 13 July 2020 (UTC).
@Dumelow: New enough, long enough, referenced, neutral, no copyvio issue. Hook is verifiable with the provided citation, and is found in the article. QPQ is in order. The proposed image has appropriate copyright tag and is relevant. Optional: suggest adding some detail about how the sensor detect deviations, and what is the measure of the deviation (change in height, angle?), because that aspect of the instrument seems not trivial. Otherwise this is good to go. HaEr48 (talk) 17:33, 26 July 2020 (UTC)
