Analysis of Aero Board Racer tag sizes

[poorman]

This is true of a lot of Aeros although the Board Racer (and the cross-zips made on that pattern) measure like a size down from most brands. Size 42 Board racer is about 22" P2P for instance.

If only we had some data to show it

 

[Salmosalar]

Standard size on the patterns based on 1930s jackets.
One size down for 1950.
One size up for Premier versions including the Board Racer.

Rule of Thumb only, but works for me.

That pretty much works for me too , as a handy rule of thumb….