https://www.sheldonbrown.com/cribsheet-bcd.html
Measuring between two adjacent holes can work. Bit hard to tell with your tape measure lining up on the imperial edge rather than the metric, but looks yours is 151mm or 144mm BCD?
Cheers
I think it's a 144BCD
@Bearlegged started
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https://www.sheldonbrown.com/cribsheet-bcd.html
Measuring between two adjacent holes can work. Bit hard to tell with your tape measure lining up on the imperial edge rather than the metric, but looks yours is 151mm or 144mm BCD?