Posted by Robert Nash on 16-06-2006 13:12
#1
Expensive
but superb 
and very light. For field work these are simply amazing. And very light.Catalogue Download.No prices.Contact Eschenbach for suppliers.
http://www.eschenbach.com/catalog.pdf
Galilean Systems for Near.Products
1636-2
1636-3
1636-4
The last digit is the magnification.