Dave,
Thank you for your insight. On the subject of 'surplus' speedos, I would be happy to buy an instrument cluster from you if model and condition are right. Please contact me via email (link from Brickboard).
As for speedo accuracy, personally I don't think it's important. It's the tach you need to look at. Easiest way to check accuracy of the speedo (and I'm surprised no one has mentioned it) is via GPS (present in one form or another on nearly every phone).
I've always assumed that one reads the speed from the far right point of the 'ribbon' though in my case the base of the point is more accurate.
BTW - does anyone know whether the late 544 and 122 clusters are interchangeable (different gearing not withstanding)?
Thank you.
KaiS
'67 Duett
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