I am having trouble telling the difference between the long cane and the short cane versions. Probably due to declining eyesight. Using a dial caliper, I measure the straight part of the cane from the hat to the end as 100/1000's of an inch on the short cane and 120/1000's of an inch on the long version. Can anyone verify this, or is there a better way? Thanks for any help. Jim..........