Diamond Proportion Scope -which and where?

[dendufau]

I need to measure measure table width, crown height and pavilion depth, girdle thickness, crown angle and pavilion angle, and symmetry.

I need to find an old GIA proportionscope on ebay or get a:

http://www.szfable.com/e/products/Diamond-Testers/proportionscope.html I sent an email to them in regards to price and availability.
or
http://www.kruess.de/shop/Proportionscopes/Proportion-Ocular-with-Stone-Holder-PO11::115.html

No expensive machines.
Any insight or recomendations?

Thank you
Dennis

 

[Gypsy]

You can do math.
OR you can go to an appraiser with a sarin.

Those are your choices.