IRD seatpost ad

[classen]

From August 1989 MBA.

Cool stuff

This ad just reeks of engineering. Look at those seatpost lengths stated in inches with 5 significant digits !!!

 

[Coleman]

This ad just reeks of engineering. Look at those seatpost lengths stated in inches with 5 significant digits !!!

It's that quaint unit of measure still adopted by our cousins on the other side of the pond - 13.875" is the same as 13-7/8 inch - when you turn than into decimals it gets down to thousandths of an inch - which makes all the difference on seat post length

 

[GoldenEraMTB]

love that ad.