Zeiss Turita 8X24 Owned by Ernest Hemingway (View 7)
It was an honor for me to repair the separated prism in Hemingway's binocular. Here are the two components prior to being re-bonded. Note the paper thin copper plate between the two prisms. Also note the old Canada Balsam cement projecting on either side of the smaller (ocular end) prism. Although I cleaned the prism faces of all traces of Balsam prior to rebonding, these projections were left intact and provided ideal witness marks for a perfect fitting during rebonding.
The Turita's prism is similar to a Möller prism (See: www.flickr.com/photos/binocwpg/5207101527/in/set-72157623... and www.flickr.com/photos/binocwpg/5207694610/in/set-72157623...), but one big difference is that the roof sections of the large prisms are on opposite sides. Turita Views 8 and 9 (www.flickr.com/photos/binocwpg/7047825189/in/photostream and www.flickr.com/photos/binocwpg/7047820865/in/photostream/) show this very clearly.
Zeiss Turita 8X24 Owned by Ernest Hemingway (View 7)
It was an honor for me to repair the separated prism in Hemingway's binocular. Here are the two components prior to being re-bonded. Note the paper thin copper plate between the two prisms. Also note the old Canada Balsam cement projecting on either side of the smaller (ocular end) prism. Although I cleaned the prism faces of all traces of Balsam prior to rebonding, these projections were left intact and provided ideal witness marks for a perfect fitting during rebonding.
The Turita's prism is similar to a Möller prism (See: www.flickr.com/photos/binocwpg/5207101527/in/set-72157623... and www.flickr.com/photos/binocwpg/5207694610/in/set-72157623...), but one big difference is that the roof sections of the large prisms are on opposite sides. Turita Views 8 and 9 (www.flickr.com/photos/binocwpg/7047825189/in/photostream and www.flickr.com/photos/binocwpg/7047820865/in/photostream/) show this very clearly.