Contact
This site publishes figures other people can check, so the useful message is the one that names a document.
For questions or corrections, email hello@grainmillwright.com.
The corrections procedure
What to send. The page, the figure as printed, and the manufacturer document you read instead. A correction is checked against the document, so the document is the part that matters.
What happens next. The claim is re-fetched from the source named beside it. If the source no longer says what the page says, the figure is changed and the old figure is written into the research ledger as a discarded claim, with the reason.
What does not change. A disagreement between two of a maker’s own documents is not an error to be resolved. Both figures stay printed, with both sources, because reconciling them would publish a number no manufacturer stated.
The procedure those three steps sit inside is written out on the methodology page, together with the claims that have already been discarded and why.