Adjusting the rangefinder from Bill Gunn
getman@bluemoon.net .... I'll tell ya, my best friend bought a B&S for $30, because the guy he got it from thought his was out of whack!! Stick with it, and I bet it works. The heads for the adjustments of "coincidence" and "halving" are situated on the left enlarged end, at the top rear and on the underside respectively, and are protected by covers which can be rotated by means of small projecting pins in order to expose the heads. When the eyepiece is focussed there will be seen across the middle of the field a fine, sharply defined horizontal separating line, dividing the field into an upper and a lower portion. The image seen above the separating line is INVERTED (up side down), BUT NOT REVERSED RIGHT FOR LEFT. It can be VERY confusing the first time you go to use a B&S, (the army training school was 5 weeks long!!) but once you get the hang of it, you'll just pick it up and the rest becomes 2nd nature.
Here's how I'd get started; 1) With the small adjustment knob at about the 11 o'clock position, right next to the right eye piece, select the clearest lens shade 2) Focus the right eyepiece with the lever just under the right eye piece, looking at clear sky, (NOT THE SUN), focus so horizontal line is very sharp. 3) Set the "halving" setting with the bottom dial at the left end, ( what you will be doing is separating, and bringing together the "right side up" image on the bottom, with the "up side down" image on the top, they will come together "top to top"). A good thing to use would be a telephone pole at about 500yds, just concentrating on the top of the pole. When you are done with this setting, the tops of the pole in the upper & lower image will come together at exactly the same time. (A small movement with these wheels makes a BIG change in the image). 4) Now you can try to "range" something, but the adjustment will most likely be WAY off, this is where now you set it up with the moon as infinity. That is done by getting it roughly close with the adjustment by the right handle, then reset it with the upper left end wheel, then back to the wheel by the right handle. Keep going back and forth until they agree. Before you start be sure that you have the unit fairly well secure in a good tripod, it cuts down on trying to find your target over & over. Once you set it up like this, it stays in adjustment real good. When I set up mine I checked my buddy's, and his held for over 5 years, and it was still dead on ! E-mail me if it still gives you trouble.
If this doesn't work e-mail him.
Lynn aka Waterboy
