Alice in Wonderland or through the looking glass.
To get the field stops merged at closest distance 58mm IPD.
Rest images with the close focus position maintained 67mm IPD.
At perhaps 3.5 metres IPD rest image 63mm.
These are approximate measures with a ruler.
So the fact that the objectives move sideways by varying amounts means these are not normal binoculars when measuring IPD.
Stranger and stranger.
Regards,
B.
To get the field stops merged at closest distance 58mm IPD.
Rest images with the close focus position maintained 67mm IPD.
At perhaps 3.5 metres IPD rest image 63mm.
These are approximate measures with a ruler.
So the fact that the objectives move sideways by varying amounts means these are not normal binoculars when measuring IPD.
Stranger and stranger.
Regards,
B.