Leather case marked "KR". Brass body with threaded caps. Optics inside. A bubble level on the outside of the main tube. What is it? Age? Field of use?
(http://fototime.com/3B7DDF63CA8D088/orig.jpg)
Thats a Kuker-Ranken sighting level. Still for sale currently.
OK, I'm game, how do you look through the sight and look at the bubble at the same time?
Maybe consequently not concurrently ?
One eye for each..........
You'd have to be really cock-eyed to do that.
You surely would be after doing that.....LOL
It was a little bit of a serious question tho, I have seen small sighting glasses designed for a transit, usually there is something to hold it level after you set it up with the bubble to point at a horizon line...
I'm wondering how helpfull a bubble is on a pocket glass...
These are properly called a Locke level, after the gentleman that invented it.
They are hand held and are useful for quick leveling or checking level at a construction site. Generally used where precision isn't required and you don't want to take the time to set up a builders level on a tripod.
They are a lot easier to use if you hold it against some kind of support, like a pole.
http://constructionmanuals.tpub.com/14043/css/14043_137.htm
Mike
I remember using these before the days of laser levels,they were good for quick checks on excavations and rough grades. I don,t recall the brands I worked with but they were brass and did look similar to yours
see http://www.mytoolstore.com/dwhite/hand.html $68 + $14 for the case...
used on archeological digs etc where an expensive level is not needed, to expensivem or too bulky to carry, see http://www.beg.utexas.edu/coastal/thscmp/fieldprocedures.htm
Quote from: jimwrench on September 05, 2012, 12:58:26 PM
Thats a Kuker-Ranken sighting level. Still for sale currently.
Hence the impressed KR mark on the holster. Still made, and online:
http://www.krinc.net/17770/Kuker--Ranken-Hand-Levels.html
>OK, I'm game, how do you look through the sight and look at the bubble at the same time?
"The level vial is mounted atop a slot in the sighting tube in which a reflector is set at a 45° angle. This permits the observer, who is sighting through the tube, to see the object, the position of the level ..."
Thank you all for answering my question, plus the additional interesting comments!
That's what we do!
>a reflector is set at a 45° angle
Ahhhh!