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Started by Frank Weissörtel, October 26, 2019, 04:40:42 pm
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Quote from: Simon Tomlinson on October 27, 2019, 01:24:27 amWhat is the diameter of the objective and the approximate length of the instrument please?
Quote from: Simon Tomlinson on October 27, 2019, 01:24:27 amAre there any serial numbers or indication of the magnification?
Quote from: Peter Schmoll Jr. on October 27, 2019, 06:50:32 pmPerhaps also an early model (first series ?) of the Zeiss Tela?http://www.monocular.info/cz12x15x20x24x60.htm
Quote from: Uli Zeun on October 27, 2019, 08:19:23 pmSo, Peter's Tela assumption may be right - some designs and forerunners for the later 15x60
Quote from: Uli Zeun on October 27, 2019, 08:19:23 pmAny other inscriptions?
Quote from: Niall McLaren on October 28, 2019, 01:18:37 amMaybe the part you're unsure of is an eyeguard Frank? Try the filter on it and the other bit safely protects your other eye.
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmNow that I see and know that you cannot screw together parts 2 and 3, one of my very first thoughts when I saw your pictures finds some more ground. Could it be that the ocular part is similar or something like my Carl Zeiss Jena 7x or 8x25 (www.monocular.info/cz7x25p2.htm) that may be some aiming or director scope for a Blinkgerät or gun
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmand the conical objective tube rather derives from some French Krauss, Fournier or other spotting scope like the triple eyepiece model or another with just one eyepiece --> www.monocular.info/krauss3oku.htm or www.monocular.info/krauss15x75.htm or www.monocular.info/fournier12x23x30x65.htm or www.monocular.info/fournier-triple.htm or www.monocular.info/zion15x75u-217.htm
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmAn objective protective cap with a slider and smaller hole also is not too unusual for scopes to cut off too much light in bright weather conditions (like this one www.monocular.info/huet12x50art451b.htm), but not necessarily meant for astronomical use, i.e. her observing the sun.
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmI overlooked that the part you do not know its use of, was not attached to the prism housing. As I mentioned before, it is similar or the same as the prism cover plate part with an eyeshield of a CZJ 15x60 monocular I own (cf. pics). So, your part may be substituted to the prism cover plate in place at the moment.
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmSaying all this, the case with more empty compartments to take in other filters etc. may also come from a French spotting scope instead of a original Zeiss one.
Quote from: Uli Zeun on October 28, 2019, 07:58:06 pmWhen you hold all parts including 2 and 3 together, do you get a focused image?
Quote from: Simon Tomlinson on October 29, 2019, 12:34:08 amMy opinion is that the leather case and all the parts inside came from Zeiss. There are a lot of design similarities to other Zeiss instruments.
Quote from: Simon Tomlinson on October 29, 2019, 12:34:08 amWould the prism screw onto the body without the use of part 3 and produce an image through the eyepiece?
Quote from: Simon Tomlinson on October 29, 2019, 12:34:08 amOf course, this would not explain why the eye shield part seems to be designed to swap with the existing prism cover, although this does not seem to be a very convenient design for the user and risks introducing dust into the optics. There seems to be one screw hole missing from the shield compared to the prism cover on the instrument.
Quote from: Simon Tomlinson on October 29, 2019, 12:34:08 amCould the extension tube, shield and eyepiece be fastened together to make an alternative to using the prism?
Quote from: Simon Tomlinson on October 29, 2019, 12:34:08 amLooking closely at the photos, there might be a tiny number 3 stamped on the eye shield part.