Mues Special Sight

[mungo]

Firstly, my apologies for not posting any pictures. I have tried unsuccessfully I'm afraid. So I will do my best to describe my question with words alone.
I have just fitted a Mues Special aperture sight to my Lithgow No. 1 Mk.111* There is no "witness/reference" mark on the moveable block of the sight to line up with the fixed range marks on the left hand side. I have no access to a range at the moment to test any adjustment that I make. But this is what I've done. I have assumed that the top of the moveable block is the "witness" mark. Positioning this at 500yds. for example, and positioning my still installed rear sight at 500yds. Looking through the aperture I get a good sight picture. (Original rear sight vee and front blade). So I'm assuming that the top of the moving block is the "witness" mark. Am I correct ? Any information or advice would be greatly appreciated. Thanks in advance.
Mungo

Information

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[mungo]

Managed to figure out how to post pics. Now feel happy I'm not a complete idiot.
Hope these help.


Attachment 60437


Attachment 60436

[muffett.2008]

Well Mungo, it looks like the resident guru on that Satelite site hasn't got a clue, so I better clarify the situation.
The Mues Special was rushed into production in 1935 to try to subvert the release of the fixed arm Central sight.

It has a few obvious drawbacks, mainly to do with the rifles currently in use in that timeframe. As the SMLE was only just becoming available to Australian rifle club members, who had until 1932 used either the LLE or a shortened version, the sights of the day were all calibrated for Mk.VI ammo and the longer barrels then in use.
It was also available with two windarm lengths, the short arm for direct mounting and the longer arm for mounting with a bracket, as depicted in your pics.
Now back to the zero mark, you will need to unscrew the elevation lockscrew, remove the spring and washer..........and lo and behold, you will see a witness mark, cleverly obscured by the washer...........you may need to modify the washer so that it can be seen more clearly when assembled.
Attachment 60805

The elevation and windage are both in minutes of angle, the elevation outer scale is in yards, but there is no correlation between either scale, the yardage is a rough adjustment and the minute scale is used for fine adjustment, having said that though, the elevation set on 0/0 minutes, should equate to 200 yards on the yardage scale.

But as previously stated, the settings for this sight are for the early ammo and long barrel, you will need to zero and use the minute scale, recording the settings for any other ammunition.

[mungo]

Spot on. Thank you muffet.

[5thBatt]

Spot on. Thank you muffet.

Yeah Muffett