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Jim Watson · July 27, 2018, 12:05 PM

Limitations in lens grinding and mounting. Not many lenses in a 19th century scope, a modern short scope is full of glass.

July 27, 2018, 12:05 PM	#4
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,539	Limitations in lens grinding and mounting. Not many lenses in a 19th century scope, a modern short scope is full of glass.