thanks for that memory on the folding measure stick...
Haven’t heard that referenced in a long time, and remember my dad using one and teaching me how to measure with it.
My Dad was an apprentice carpenter...specializing in construction of radio cabinets...when his apprenticeship ended they told him no jobs were available as Bakelite had just been invented
Anyway...he showed me the special trick way of folding the rule with minimum number of moves.