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Rangefinder How do I use the rangefinder scale on my Helios Oceanmaster binoculars

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Its easier to explain seeing a diagram. Go to Tascos website and download the instruction manual for the Offshore binoculars or Steiner Optic website and download the general binoculars instruction manual. It has all of Steiners models incuding those with a reticle. Most reticles are the same and there is no difference between meters and yards as your calculations are an approximate

Posted on Aug 02, 2009

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Rolling distances on rangefinder.


Unless that device has a laser in it, rolling distance calculaters are hard to come by because they are not cheap.

May 05, 2013 | OpSwiss Binoculars & Monoculars

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I was wondering about the calibrations in the center between the eye pieces' and how they are used


It's there to help you set the binoculars quickly to your own inter-pupillary distance. Just make a note of the number the pointer on the scale is at when you find a comfortable setting for your eyes and then when you next use them just set the pointer back to the same number. The scale is the angle of the yoke, and you'll often (but not always) find that the scale works on other makes and models as well to help you quickly set the binoculars up to your own preferences. The left eyepiece will also have a dioptre scale (not always accurate) so when you have sharp right eye focus, adjust the left eyepiece until you get sharp left eye focus as well.The scale on the eyepiece indicates how many dioptres (+/-) your left eye is different to your right eye. If you know the left eye setting and the yoke angle, you can quickly adjust most binos to your own comfort settings. Fixed focus binoculars are different in that they have dioptre adjustment on both eyepieces, so left eye settings from regular binos are not directly useful on fixed focus binos, but the yoke angle may still apply.

Sep 01, 2010 | Bausch and Lomb Legacy 12-1056 Binocular

1 Answer

Double image occured after the omega 40 X 70 binoculars were dropped


There are a series of lenses and prisms inside the binoculars. When the unit was dropped one of more of those elements have been dislodged and that is what is causing the double image. You can check with the retailer to see if there is a repair center in your area. The way these units are put together they are difficult to take apart, repair, and put back together. Depending on the cost of the unit you might be better off replacing them. Check with the retailer to see what they say.

Mar 17, 2010 | Omega ATN 7x50 Daytime Binoculars with...

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Where do I find the serial number on the binoculars?


It depends upon the model.
For Monarchs the serial number is on the underside of the RH hinge
On the Actions it is on th central hinge plate with the PD scale
For the compact Sportstars it is under the central bridge.

Jan 23, 2010 | Nikon Binoculars & Monoculars

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I have a pair of leica binoculars model 102351 which has vitical and hrizontal markings in the lens, I presume it has something to do with a range finder but I have no idea how it works. I would appreciate...


You are correct that the lines are for rangefinding. This is what is called a reticle. Without seeing how they are set up it is hard to determine the scale used. Most scales are in meters, some in yards, but they all work the same. Go to any of the following websites and download the instruction manual.
Go to Tasco and search for the Offshore OS 36 or 54 manual. OR go to Steiner Optic and download the manual for the Military 7x50 or Commander or Navigator models.
These instruction manuals have details and diagrams of how to read a rangefinder reticle.
Basically if you know the distance to an object you can estimate its height or size. OR if you know the size of an object you can estimate the distance to the object.

Jun 11, 2009 | Binoculars & Monoculars

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Alternative to Leica Laser Locator


Leica locator with DGPS capabilities? Leica still manufactor advanced military systems under the Swiss brand name of Vectronix which is part of the Leica group. Are you after a laser locator or a rangefinder such as the discontinued 7x42 Geovid. The Geovid is still available but no longer has the electronic compass. The original never did connect to a DGPS PC only the Leica Vectronix Vector could. None of these models will locate a laser only use a laser to calculate distance. Current Geovids range to 1200 meters and the Vectronix 21 will range to 12 Kilometers. Unless you are a certified government customer the Vectronix 21 you will not be able to purchase. Newcon have models that allegedy exceed 2000 meters that are made in Russia and depending on the model can be had for a few thousand dollars. The Leica Geovid 8, 10 or 15 power can be had for around 2.5 thousand to 3 thousand dollars and is an excellent robust unit. It will not connect to a PC for GPS sync though.

Mar 12, 2009 | Leica Laser Locator Binocular

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How to use the reticle in my Fujinon Mariner Binoculars?


How to use the reticle:
The vertical scale (reticle) visible through the left half of the binocular, above the compass display, allows you to calculate distance to an object if you know its height, or to calculate the height of an object if you know its distance from you.
Each mark on the vertical scale has a value of 5 MIL (1Mil is equivalent to an angel that can determined an object one meter in height at a distance of 1000 meters). Therefore, if a navigation chart gives the height of an object, by sighting on it and counting the number of MILS, you can determine how far away it is.
To Measuer distance when height is known:
Object Height(m)/Scale Reading x 1000m=Distance in Meters
To Measure height when distance is known:
Distance(m)xScale Reading/1000=Object height in meters

Jan 26, 2009 | Fujinon Mariner WPC-XL Binocular

1 Answer

Double image


The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Aug 03, 2007 | Bushnell 10 x 42mm Sportsman Binoculars

1 Answer

Double vision


The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Jul 03, 2007 | Bushnell Powerview - Compact 10 x 25...

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