Re: [Leica] plastic verses metal (sextants)

[Mark Rabiner <mark@rabiner.cncoffice.com>]

John Collier wrote:
> 
> A few comments. This is entirely anecdotal and subjective, the writer does
> not even say if they have actually compared metal and plastic sextants under
> similar conditions. Second, it is possible to tailor the composition of
> synthetics to suit many thermal requirements, just ask NASA. Even the
> assumption that "metal" is heavier is not correct. It depends on the metal
> in question. I understand what the writer is trying to say and probably even
> agree with them but the quality of their arguments is very poor.
> 
Yea cause nothing expands like metal they don't make thermometers out of plastic!
Mark W. Rabiner
:)