[TowerTalk] Mast diameter

[Howard Hoyt]

TTalkians,

I have a 20' long steel mast (looks like chrome moly) with 0.25" walls, 
which until today I assumed was 2" in diameter.  I had taken it down 
from the tower where it was in service, so at the time I assumed (!!!!) 
it was made to be a mast.  Today I tried a 2" DX Engineering mast clamp 
on it and it was loose.  I did what I should have done a long time ago 
and measured the mast with dial calipers, and found the actual diameter 
is 1.903"...!!

As a result I have queries for all you experts:
1) What do I have?
2) What is the best clamping gear available for that mast size?

Thanks all for sharing your expertise and have a great holiday weekend!

Howie - WA4PSC