All you can do is minimize the loss as much as possible.
From a collectors viewpoint, I am strongly FOR such losses...!!!
If it wasn´t for this friction, which leaves planning debris on shelfs everywhere, I could never expect to find a Zeiss binoculars in mint condition.
All binoculars would be in used condition.
Besides, perfect planning would probably mean, that I could only hold as many binoculars as I presently needed in everyday life. Any extras would be a loss to the community.
Or may, just maybe, the perfect plan is to keep me, and anybody like me, happy, which means, we will- or must have an appropiate access to binos we like or want.
I am not surprised major business men takes lectures on philosophy. It sure do make a lot of sense.
Just a warning: I know the above is flawed in several places...look for yourself.
From: Peter Abrahams
Another retail outlet for Nye damping grease is:
This grease is quite expensive but when used in focusers, provides an excellent feel & reduces unwanted travel.
Harold Richard Blackwell wrote on vision in the 1940's & 1950s; and is best known for a definitive paper on the adaptation of the eye to night vision:
Blackwell, H. R., 1946. Contrast Thresholds of the Human Eye. Journal of the Optical Society of America 36 (1946) 624-643.
I was looking for a paper on coronagraphs at the University of Michigan site, and found a series of engineering papers UM had posted on line. One of them was about vision & by Blackwell, so I downloaded it, and found some sections on very odd binoculars, including helmet mounted Galileans and the 'Feinbloom contact lens Galilean binocular'.
A direct link to the paper does not work; you have to search for it at the link below; then it is easiest to choose .pdf download, which provides the paper in three sections. The second section, pp21-40, contains the binoculars.
. Optics and Vision: Period 1, July 1955 to 31 January 1956. Ann Arbor: University of Michigan, Engineering Research Institute, Vision Research Laboratories, 1957. 30pp. 6.3 Binoculars. http://www.hti.umich.edu/u/umr/
Binocular List #299: 04 June 2004
Finally, I managed to get a picture of a fairly large rangefinder...