The Commonwealth Bank Columns were erected at the posted coordinates to celebrate 100 Years of Rotary.
Rotary International is an international service organization whose stated purpose is to bring together business and professional leaders in order to provide humanitarian service and to advance goodwill and peace around the world. It is a non-political and non-religious organization open to all. It was founded by Paul Harris on 23 February 1905 in Chicago IL USA. It's motto is 'Service Above Self'.
The Commonwealth Bank Columns are one of those various monuments/sculptures/plaques around a town that you normally would probably ignore. I think they are facinating and so have used them for this Multi cache.
At the posted coordinates you will find the Commonwealth Bank Columns and a Plaque with details about them. Find the required information to calculate GZ.
The Number of Cogs on the Rotary Symbol = AB
Officially Opened and Dedicated on CD March EFGH
The cache is located at S 34 4 H . B D F E 149 4 G . (B+1) (H-1) (D+1)
BYO Pen.
Good Luck.