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Sunday 8 April 2018 at 02:32
Quoted from Jjsmooth:So now we are measuring depth of dimple... we are going to need more accurate methods for measurement and documentation.
Or maybe we don't.
I propose a new unit for measuring dimple depth. It’s the BFD.
I just measured and my Data East, Williams and Stern pins all have 10...
Source: http://pinside.com/pinball/forum/topic/steve-ritchie-discusses-pinball-playfield-dimpling/page/2#post-4326649