Tony Pritchard on X: "Kern Swiss Family drawing equipment: compass, extension bar, ruling pen #FontSunday @presentcorrect @DesignMuseum http://t.co/ylxES4chyM" / X
Kern Jointed Bow Compass - With Extension Bar - Walmart.com
Vintage Kern Swiss Compass Set - NOS - Mod T2147 - Made In Switzerland | eBay