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Therefore they are sold“with all faults” or“AS IS” unless otherwise specify in writing. DISCLAIMER: Many of our items are previously USED products or REFURSBISHED. If a product offered in our store is not as described, your sole remedy is to return it in unused condition. SILO does not warrant that product descriptions or other content is accurate, complete, reliable, current, or error-free. SILO attempts to be as accurate as possible. Make a thoroughly inspection of the photos, description and conditions of each item you are interested, before placing your biding. IF YOU PLACE A BID IN OUR ITEMS We’ll consider that you have agreed to all the following Term of Use. If you do not agree with any part of our company policies, please do not do any bidding in our items. more our terms and conditions, which has the purpose to clarify and help for a better business relationship with our customers. TERMS OF USE Welcome to our SILO Ebay store. This is a conventional direct-vision finder with a single negative lens and alignment post, at the rear of the finder a frame is hinged so that it remains vertical when the finder is tilted, to this frame a second frame is attached that will remain horizontal.LEITZ WETZLAR GERMANY MICROSCOPE FILTER ILLUMINATOR PART OPTICS BIN#A3 Sold as is. The finder is levelled by aligning the edge of the horizontal frame with a centre line engraved on the lens. To use as a telemeter the finder is tilted downwards so that the pointer aligns with the centre line on the lens and the base of the subject, the horizontal frame will then point to a value on the distance scale engraved on the lens above the centre line. The finder was supplied with three masks to fit behind the lens for different angles of view, a mirror for use at waist-level could be attached behind the pointer. There were two slightly different versions, the first (the example shown here) is depicted in the British Journal Almanac of 1908, in the 1912 issue it is described as 'improved' and that a patent has been applied for.
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The drawing of the second version shows the pointer to be suspended from the top of the rear section rather than the bottom. Its use as a telemeter is slightly different: the finder is levelled by ensuring the horizontal frame aligns with the centre line of the lens, the base of the subject is then observed against the distance scale engraved on the lens. Two scales were engraved, one for eye-level use the other for use at waist-level.Īs a finder and a level this instrument works well, it is less successful as a telemeter as the strong negative lens makes the numbers on the glass difficult to read. With the increasing use of hand cameras where focusing on a ground glass screen was impossible or inconvenient, separate distance meters came to be used. Originally these were called distance meters or telemeters, the term rangefinder applied to the 'two position' optical devices was used a few years later. Some common arrangements are listed below. Subject Angle (Declination) These work by aiming a sight at an object, a level or plumb bob will then show the angle the object makes to the horizontal which can be converted into a distance.