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Privacy Policy

This is a reference resource. It collects as little as possible, and what it does collect is described below.

Sources and scope for this page: Site privacy policy (first published 2026-09-23), covering how this site handles data and cookies. This page states the site’s own practice rather than external reference data, so no separate source check applies; the date it was last revised is given below. How sources, methods and updates are recorded.

Last updated 2026-09-29

What this site is

A free engineering reference site publishing dimensional, material and conversion data compiled from published standards. There is no account system, no login and no user-generated content.

Information collected automatically

Like most websites, the server and any analytics service record standard technical information when a page is loaded: the page requested, the referring page, an approximate location derived from IP address, browser and device type, and the time of the request. This is aggregate information used to understand which pages are useful and to detect abuse.

This site sets one category of cookie — analytics — and only if you agree to it. On your first visit a banner asks whether to accept; nothing is written to your device until you answer.

  • Analytics cookies, set by Google Analytics when you accept. They distinguish a returning visit from a new one. You can withdraw this at any time using the Cookie settings link in the footer of every page, which clears your choice and asks again.
  • No advertising cookies are set. This site does not currently carry advertising. Should that change, this policy will be updated and any advertising cookies will be subject to the same consent requirement — nothing will be set before you agree.
  • A consent preference is stored in your browser's local storage to remember your answer. It is not a cookie and contains nothing but the word accept or reject.

Analytics

Google Analytics 4 is used to count visits and understand which pages are useful. It is loaded with Consent Mode: every storage category is denied by default, so no cookie is written and no identifier is created unless you accept.

If you reject, Google Analytics still receives a cookieless, aggregated page view — no identifier, and no tracking across other websites. The page counts in this mode are approximate, which is an acceptable trade for collecting nothing without consent.

Analytics data is not used to identify individuals and is not sold or shared for marketing purposes.

What is not done

  • Personal information is not sold, rented or traded.
  • Email addresses are not collected unless you send a message and expect a reply.
  • There are no accounts, profiles or behavioural tracking beyond standard advertising and analytics cookies.

Your choices

Cookies can be blocked or deleted through your browser settings. Blocking advertising cookies does not prevent you from using the site — the reference data remains fully available. Most browsers also offer a private browsing mode that discards cookies at the end of the session.

Requests concerning personal data — access, correction or deletion — can be sent to contact@refmanual.com. Since the site has no accounts and stores nothing tied to an individual, most such requests resolve to a confirmation that no data is held.

Children

This site is a technical reference and is not directed at children. No information is knowingly collected from children.

Changes

If this policy changes, the revised version will be posted on this page with an updated date.