Interpreting Factory blue prints

[AkroDave]

Hi Folks

I guess I need some help from someone who has scratch-built a Pitts...

How do you determine where to put the center of a compass to draw the radiuses shown on various parts of the plane.(firewall and stabs etc.)

How would you do the layout on metal??? Like to make a new firewall from the plans????

The factory blueprints show radii on many places but I still can't figure out where I'd put the center of the compass to draw some of the radii out.....

Any help or technique would be greatly appreciated...

Thanks,Dave

 

[Knight Twister]

 

[macwolf]

 

[barchiola]

 

[AkroDave]

 

[macwolf]

 

[barchiola]

 

[macwolf]