Daily readership of the English Wikipedia article Plane (tool) , via the official Wikimedia pageviews API. Bot traffic is excluded.
Note: Wikipedia redirects “Hand plane” to “Plane (tool)”, so this measures the broader article — readers looking for Hand plane land there, but so do others.
Readership is a proxy for interest, not sales. It shows where attention is going, which usually leads demand — it doesn’t promise anyone is buying.