I am going to the pub
, there is also a two piece variation with pointy teeth, I found an assortment in a box but could not find a flat tooth ratchet to match the flat tooth quadrants only pointy this is what confused me
. I am happy now that the flat tooth must match with the flat tooth ratchet pinion as in the photo
greybeard sorry about that was it doing your head in
oooops looks like all the ratchet pinions are the SAME part number