3013 some kind of screen or sieve. Small stuff falls through holes in rotating screen, big stuff get carried to end. Separates wheat (or rice) from chaff?
3015 peep sights
3016 some kind of optical instrument, hard to tell what it does. Might determine the degree of rotation of polarized light in a sample. Might be used to determine the curvature of a lens.
3015 Sights for a weapon, probably a mortar.
3018 Artificial Horizon I note the marking for Dive/Climb. In view of
the simple pedestal, perhaps for a trainer or as a classroom aid? Hard
to imagine if it is for a plane or a submarine.
On 10/31/2013 4:10 AM, Rob H. wrote:
Seed cleaner is correct. Probably the reason that sometimes I don't see some
is because occasionally people post to just one of the groups instead of all
three. I usually check all three but some weeks I don't have time and will just
check one of them. When a I read a post in one newsgroup it's not marked as
in the other two so it's can be time consuming to look for posts that are just
Hmmm ... you need a better newsreader. The ones which I use (in
unix systems where usenet news had its origin) mark all instances of a
cross-posted article as read when you read in one newsgroup.
Hmm ... perhaps a pointer in their newsgroup could get that
modification made to their online newsreader. (I've never used it,
though I've used Newsguy for quite a while -- with my newsreaders in my
systems connecting to their news servers.
I would not expect a submarine to dive or climb that steeply. I
believe it is for aircraft -- and as I just mentioned, because of the
mounting I suspect that it is a demo device, or a manufacturer's
desktop give-away (to congressmen and the like).
This shows that the seller *believes* it to be a submarine diving
gauge, but I see significant problems with that.
1) The ends of the axles appear to simply go through holes in the
gimbal, with just a thin washer between the ball and the gimbal
to minimize friction and wear on the painted surface of the
2) Thus no gearing inside to allow reversing the direction of ball
tilt vs base tilt. (And something for use in a submarine would
not be set on a desktop platform base, which would slide at the
more extreme tilts.) (I would actually expect it to be mounted
in an instrument enclosure similar to that for aircraft
3) So -- a weight at the center of the bottom would cause the
indication to be "climb" (white top towards you) when it was
actually a "dive".
Note that the aircraft instruments don't depend on weights to
cause the tilt. They are driven via servo motors and synchro
feedback and the direction of tilt is easily changed by the
wiring of the synchros used for position feedback. The signal
comes from the gyro stable platform used for all the navigation
instruments, which is located someplace safe in the body of the
4) Note the radial lines coming from the intersection of the
horizon and the vertical climb-dive scale. This is used to
indicate the tilt from side to side. And there is no provision
in the mounting of this to allow it to rotate in that direction.
Yes -- there *are* early artificial horizons which don't depend
on a remote gyro -- I have a couple in my collection which have
*built-in* gyros. One has the gyro spun by air sucked from the cockpit
and exhausted through a venturi similar to that which also provides
airspeed information. The other has a gyro spun by 115 VAC, three
phase, 400 Hz. Both of those are prior to the use of a ball (easier to
drive form the servos). Instead, there are mechanical linkages which
move a horizon line up or down the same way that the horizon on the
balls are designed to work. The horizon line goes up when in a dive --
just as the visible horizon goes up as seen through the windshield in a
dive. (Assuming visibility is good enough to allow the horizon to be seen
-- the major reason for artificial horizons being poor visibility. :-)
And actually, the one in the puzzle and the web-based sale (I
believe they are the same photo, actually) -- assuming that it is
sitting on a horizontal desk -- if it were working on weights it should
be indicating horizontal travel, instead of showing a dive. So this can
be set by hand to indicate whatever you want, and it will stay there.
Posting from my desk top PC in yhe living room as always.
3013, Looks familiar, but can't place it. Might be a gasoline powered
3014, some kind of garden hoe?
3015, the eye peep hole makes me wonder if it's some kind of gun sight.
The military look makes me wonder if it's bomb robots like the use in
Afghanistan. I've seen a couple episodes of Bomb Patrol Afghanistan. I
have only respect for those deminers, I find that one terrifying job.
3016, some kind of microscope, or possibly refractometer?
3017, no clue.
3018, part of artificial horizon gage from airplane.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.