I'd be grateful for any info about this rifle 'scope: The magnification is fairly small, perhaps X2 - X4, and the cross-'wires' seem to be scribed on glass.

Its length is about 16 inches overall (39 cms), diameter of body around seven eighths of an inch (2.25 cms) and the body is steel. The mounting rings do not (appear to) move.

The mount at the objective end is a plain dovetail, and the ramp it fits to is dovetailed at right angles, and is a tight interference fit, so the alignment can be adjusted like an 'iron' sight, by tapping it across with a hammer and soft punch.

The other mount is also dovetailed (but this ramp I have not got, yet), and would be slotted on top to mate with the captive locking bolt, which would prevent recoil from dislodging the 'scope.

There should be a brass shroud between the ocular and the body. (Probably brass, anyway - the knurled brass eyepiece is threaded to accept a tube of slightly larger i.d. than the body's o.d.) The ocular is lightly sprung, and slides into the body if pressed, to protect the shooter's eye (or if you've ever used such a device, you'll understand me when I add: "or mitigate the damage to it...")

Don't ask!

I've looked, and I can see no maker's name, no magnification factor, no nuffin'.

No clues at all. Well, it is obviously a rifle telescope sight. It fits to dovetail ramps, not a grooved rail, but that's about the sum of it, if you ignore dimensions. I'm hoping someone may know its make, nationality, or even just its approximate age. While I might make an intelligent guess at its age, I'd rather know.

Mind you, when I've been to work with a coarse rag and some diseasel oil, and perhaps some ffffff steel wool, something legible might be lurking under the  crust  patina.

Now, I've been offering it up to old rifles in my collection, and I'm struck by the number of types of rifle it will not fit on without seriously hampering the operation of the action. Hammer guns are more-or-less a no-no. My (wallhanger) 28-30-120 s-b varmint rifle (of unknown make, but likely, though proved in Liège) a Stevens) is a boxlock hammer gun, and with the scope fitted I'd be hard-put to it to be sure of cocking it safely, though as a break-barrel rifle, loading it and extracting the spent case would not be a problem.

While the rifle looks European - Belgian or
French - it is stocked in curly maple, which
suggests US origin. (To me, anyway.)

Snider and trapdoor actions are out: the M70 and M77 Werndl too, Remington Rolling Blocks would work, but would be a fiddle to load and cock, and any double-barrelled hammer gun is pretty-well excluded (the body of the 'scope will not fit between the cocks of my .5" d-b bar lock percussion deer rifle), and Martini actions are badly hampered.

It should fit any underlever tube loaders like a Winchester and Marlin. Oh, and didn't Volcanic make a magazine rifle too?

Other options could be the Dreyse system; some removable magazine bolt-action rifles

And this?

Old tool which might be some sort of ancient adjustable spanner, collected near the Champagne region of France...

The central bar is threaded, one half left-hand thread and the other, right, and the pitches are different, so when the handle is rotated the parts move at different rates. Of course, when it was made, this might have been dictated by the availability of suitable taps and dies.

Looking at it objectively, if it were a spanner, the two guides (to keep the halves of the head in line) would have been placed (say) on the sides, to allow for a nut to nestle a lot deeper between them.

Looking at the rounded outside faces of the 'snouts' I'd suggest that the tool might be for springing two elements apart. Howsomedever, I can't imagine what.

Something to do with coopering, perhaps? (Cooperation? - I'll get my coat...)