Optivisor
Optivisor #2 Replacement Lens 1.5X at 20″
Made of the highest quality optical glass, this OptiVISOR® 1.5X (#2) lens plate has a 20″ focal length.
$35.95
Optivisor Replacement Lens 3.50X at 4″
Made of the highest quality optical glass, this OptiVISOR® 3.5X (#10) lens plate has a 4″ focal length.
$37.95