18 inch Ritchey-Chretien at Unv. Florida - Al-Paslow
The fork and polar axis housing were all cast from aluminum.
The adjustable counter weight in this picture is stainless steel with a brass tightening knob. What's nice is the softer brass  won't mar the harder shaft it rides on. 

This stainless and brass combination is the same materials used when I made my conterweight setup for my home made 8 inch reflector in the 1960's. 

( Click on any image to enlarge it. )

The fork and polar axis housing were all cast from aluminum.
The adjustable counter weight in this picture is stainless steel with a brass tightening knob. What's nice is the softer brass won't mar the harder shaft it rides on.

This stainless and brass combination is the same materials used when I made my conterweight setup for my home made 8 inch reflector in the 1960's.

( Click on any image to enlarge it. )

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