Question about Bushnell "Insta-Focus" Binoculars

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Bushnell insta-focus mechanism gets stuck.

Late 60's/early 70's vintage Bushnell Banner w/ Insta-Focus, 7x50. The center post which moves the eyepieces seems to be loose and gets hung up when focusing. Is there a way to get inside and see if a screw might be loose, etc?

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They were famous for that, because the screwpin that holds the eyepice shaft is metal and the groove that it rides in is plastic, and eventually gets jammed....look where you put your fingers to adjust eyepieces. should be small metal plate in center of hinge(sometimes with bushnell logo) that will simply pry off by using small screw driver,and now you will be able to see if the screw is loose or damaged. good luck...larry@reichinstruments.com

Posted on Jan 16, 2009

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Posted on Jan 02, 2017

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If you do an image search for Nikon Mikron and the one you have looks the same then you have a Bushnell copy from the 1950's called the Palm Pocket. These appeared in the 1950's. The 6x18 was available from 1951. The 7x18 and can be found in the Bushnell 1958 catalogue. By the 1965 catalogue they had gone from the product line up. If you look around the body of the binoculars you may find a code beginning with JB or JL followed by a number. This number will give the name of the Japanese manufacturer who made them for Bushnell. If you get the number go here for the codes
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