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Will
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, September 30, 2005 - 07:31 pm: | 
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Hi all,
I have a Precise optical rangefinder that has a loose mirror bouncing around inside of it's housing. Does anyone have a few pointers or tips in the dissassembly and repair of these type units? Thanks.
Will
P.S. Here is a picture of the unit:
http://img.villagephotos.com/p/2005-8/1062736/precise_rangefinder.jpg |
John Shriver
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 01, 2005 - 05:42 pm: |
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Sure, I just worked on a similar unit, from the Brownie Mfg Co. I use it with my Kodak Monitor Six-20 and Six-16 cameras, in the accessory shoe. (The round ends should slide into an accessory shoe.)
The ends unscrew.
The knob is held by the outer nut, with the two spanner holes. You may need to make a tool to open that. (Two nails through a block of wood will do.) Mine had slots, I filed a washer to make a wrench.
Then the inner hub under the knob will unscrew from the body. It pushes on a sprung lever that rotates the mirror at the "far" end of the rangefinder.
Once you can look in both ends, you'll see how screws or a pin form the pivot for the moving mirror mount.
I didn't figure out how the fixed half-silvered mirror is mounted in mine, but there are two screws I didn't remove.
Calibration is trivial. Put it all back together, and then put the knob on such that it is at infinity when the rangefinder coincides when looking at the moon.
I also checked mine at 3 and 6 feet sighting down a tape measure.
http://john.shriver.home.comcast.net |
Will
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 01, 2005 - 11:48 pm: |
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Hi John,
Thanks much for the tips! I wasn't quite sure what to expect, having never been into one before. It's funny you mention that you use yours on a Kodak Monitor 620. I plan on using mine on a Kodak Tourist that I mod'd to use 120 film without respooling. Thanks again,
Will |
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