>>> ...Polarised versions of these lenses are only available in single vision. * * * That implies the better versions (non-polarized) ARE available in bi/trifocal. <<<
Well picked Graeme . . I am tempted to try the polaroid version, and that swayed my thoughts! There is a big difference of opinion on this issue - I guess it boils down to the canopies we sit under, something I meant to test carefully last weekend with a pair of polarized glasses over my plain ones . . . must have been having too much fun flying! Did do the measurements though - and found quite a huge difference between aircraft, eg: LS3a: instruments at 80cm, map on lap is at 50cm Janus B front seat: instruments at 70cm, map on lap is at 45cm DuoDiscus front seat: instruments at 65cm, map on lap is at 40cm Janus B rear seat: instruments at 50cm, map on lap is at 40cm DuoDiscus rear seat: instruments at 50cm, map on lap is at 45cm All measured with parachute worn and no cushions (I am 6'3" = 190cm). I wonder if 40 to 80 cm will be possible in a bifocal . . And Cath, did you get yours polarized? And which tint? Cheers, Jim Kelly _______________________________________________ Aus-soaring mailing list [EMAIL PROTECTED] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring