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Pole History Trivia - in the move to the new factory came across some old catalogs - 1957-58 - Poles listed Bamboo, Alum and the GILTAL Custom Built Vault Master!!!! -- Also Birch Javelins - the worst part is I remember the hurdles in the catalog -

Now this is from the 1967 version - Gill's Big Red fiberglass pole - also "New in 1967" - Training Poles - constructed of heavier fiberglass -

Bonus question - "The Rankin Method Chart" - what is it and what was it used for??

your sneaky!!!!!!!!

Rankin Method Chart - shows you hang a wgt and flex a pole - based on that number !!!!!!!!

This was a manufacturer stating based on flex - if you weigh xx lbs you can hold this high - you went into the chart with the flex - found the weight laid a straight edge across the two points and it told you how high you could hold on the pole - - that is pretty much the reality of it in pure engineer sense - shorter column and moment arms - can handle higher loads - short runs, less speed (the squared term) - drills - a pole under your weight will not dissolve - NFHS Rules and USATF Junior Rules require you to vault on a pole at or above your weight - reality - it is a good yard stick - starting point - not the end all - what's available, your speed, technique, grip height, mass all are factors - in the perfect world - what is available is not a factor - but - reality - it is for most