Disgusting. What's next? Kitty heart/lung transplants? If the cat can't live with three legs(lots of them do) then it should be euthanized. BTW I like cats.

I always open the pizza box with the hinge nearest me, in case a mouse jumps out. The pizza maker probably does the same.

Florent is right. More specifically, it may be for measuring the alcohol content of beer, wine or spirits.

A rivet setter

A fiber optic magnifier. This is a refinement of my previous guess.

An optical condenser/magnifier. The diameter is almost the same as the diagonal of a 35mm negative or slide so i'll guess it is used to transfer light from a lamp to the film.

Give one to each smoker. Don't let them out till the air is clear.

Gaithersburg has few places I would consider for meeting someone after having driven 6+ hours unless the search criteria included only chain restaurants. Besides, Gaithersburg is much closer to NY than Charleston. When I searched those cities all the results were south of Richmond.

Neatorama, please to Joost me.
Thank You

Chad's right.
I guess you could print it life size, but you can print a low-resolution pic life size too (if you could afford the ink).

Here's a link to a glass version.
http://www.nia.org/general/g_seper.htm
Keep those imaginative guesses coming.

A wire hanger/spacer/insulator used for low voltage three phase power.

A glaucoma test. You tell the Optometrist/Opthamologist how many rings you can see.