[math-fun] A true Mac Mahon ruler?

Hello Math-Fun (posted here as SeqFans didn't publish my mail) The first 8 terms of A002049 are: 1,3,7,12,20,30,44 and 59. I see that I can measure 29 in two ways with this ruler (I thought only one way was authorized): 30-1=29 59-30=29 I am obviously missing smthg as this is an ancient seq. signed by Neil himself. Anyway -- is it possible to build a wooden ruler with as few as possible vertical marks such that all integers measures between 1 and 200 can be materialized only once? I guess this sort of question is as old as the hat I'm wearing right now to avoid the killer sun we currently have in Brussels. Forgive me. Best, É.