1826- a bit of googling suggests it's a precision angle reference/
setter for apparatus on an optical bench- but as Lloyd mentioned, how
does it connect to anything?
Perhaps for a spectrometer or interferometer, but could obviously only
be used near those 2 angles.
Maybe even for aligning holographic film?
1828 looks like a hang tag for workers. When you arrived you moved the tag
from the out to the in hangers. When you left, the opposite. Easy to see
who was on time or if a mine, etc. That everyone had gotten out.
#1825: A cranequin, a geared rack for pulling back the prod of a
#1829: Ultrasonic water mister. Put it under water (powered up dry
kills them) so it's about 1/2" beneath and watch the fog roll off. Or
else install in a model boat as a "steam" effect (actually harder than
it sounds to make convincing)
O.K. Posting from Rec.crafts.metalworking as always:
1825) It looks as though it is intended to draw through cutting
something on both sides. Not sure what the something is, but
there appears to be quite a bit of leverage.
The force is against the bundle of what appears to be rawhide
strips bundled together with a wrapping of more rawhide.
I'm not sure why the shaft appears to be split -- other views
And -- I would like to know what the arrowhead points to, which
would need a view from the other side.
1826) Yet another thing which could benefit from additional views.
The close-up hows that each division on the main scale is a half
a degree, and the dial subdivides that into minutes (0-30 on the
dial or a half a degree).
It looks as though it is hinged at the bottom edge of the white
semi-circle, so you could put something under it to be marked to
But -- it does not look as though the leadscrews on the fine
adjusts extend far enough to handle angles near zero.
If the maker were in the USA, I would suggest that the color
suggests naval use -- but is also the color of many machine
I would like to see the reverse side of this, hoping that it
might give other clues.
1827) Hmm ... a rod for tamping down powder and bullet in a muzzle
loading pistol? (Too short for a rifle). Hmm --- perhaps for a
howdah pistol -- very large caliber used for dispatching a tiger
who attacks the riders in the howdah on the elephant?
1828) I think that this is one of the symbols which showed that a
house had paid it's fee to the fire fighters in the region. The
large number probably shows which fire house, it is good for one
year, so the year present, the 391 for keeping track of which
account it is.
1829) At a guess -- this is some form of submersible heater, given
that the power supply can produce 30 Watts of output.
It appears to be oil filled -- to conduct the heat to the
outside. The raised black thing might be a thermostat to switch
it on and of to maintain the desired temperature.
1830) No real guess as to this one. Perhaps the two sockets could hold
Hmm ... pull down on the inner end of the short links and the
flag sockets can fold inwards -- perhaps to clear a low overhead
Now off to see what others have suggested.
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Below is the best view of the other side that I have:
I don't think the arrow points to anything, an image search of 'cranequin'
shows that some of these devices have similar arrows but others don't:
Maybe the arrow was used to hang the device on their belt.
It would have been used to hang the crossbow the cranquin was attached
to from the bow mans gear using a rope or leather trace. Sort of an
The rawhide part is not a universal fit item. It would have been soaked
in water, then slid over the butt of the bow until it reached the spot
just behind the grip. Then it would be allowed to dry. This held it
securely in place and provided the anchor point for the cranquin to
operate against as it drew the bowstring. Consider that the common cross
bows of the day had between 600 and 800 pounds of draw and you see the
need for a LOT of mechanical advantage to draw the bow.
They are not hard to use. Most had a release that let the rail loose.
Then you hooked the T bar over the string. Engage the crank and wind the
string back until it drops into the dogs on the lock. Back the crank off
one turn to release the string, drop in the bolt and your ready to go.
O.K. That seems to suggest that the "arrow" may be a spring
clip to hold the crank carriage in the upper-most position -- or a clue
that you now have the string far enough back so you can now hook it on
the catch of the crossbow.
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