Yep chronos are an external male fittingMy speedo is a chronometric ...... might be different from later magnetics.
This one says it for the "Side"I'm pretty sure it's this type
It's just a push in snap fit https://www.ebay.co.uk/itm/11360696...gGXShiHQWK&var=&widget_ver=artemis&media=COPY
I think it's the same fittingThis one says it for the "Side"
Do you think it'll still work?