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  • if you take the bearing out, align a short ruler against the angled part of the bearing, look at it from above over a piece of white paper, you will be able to assess if its 36 or 45.

  • The credit card trick is a good way of checking for 45 degree simply place the corner of the card through the bearing creating a V as the sides of the card are 45degrees the card will rest on the bearing with no gap if it’s 37 there will be a gap

  • yeah that works for assessing the inside bearing angle, but not a crown race on its own or the other measurements/angles of a bearing

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