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Tuesday, March 24, 2009

Old Tools

 
Eva has posted some photos of old lab equipment and tools [Old Tools]. Check them out to see if you recognize anything.

Here's another contribution. This one is pretty easy but starting tomorrow they're going to get much harder. (Click to embiggen.)



8 comments :

Ravi Venkataraman said...

Physical balance. Street hawkers and shops in many countries use (used?) this to weigh things for customers.

Ravi

Anonymous said...

Oh great. Now I have to wonder all day what the weights of the seven missing counterweights were.

Anonymous said...

I have one very similar to this that was actually used for weighing postal mail.

Larry Moran said...

Corneel, only one of the counterweights is missing (the lightest one).

Do you want me to post the masses of the others?

Anonymous said...

Catapult.

Anonymous said...

Do you want me to post the masses of the others?

Yes, please. I have been unable to work it out :-(

Larry Moran said...

Do you want me to post the masses of the others?

Yes, please. I have been unable to work it out :-(


8oz, 4oz, 2oz, 1oz, ½oz, ¼oz.

I assume the missing one is 1/8oz.

The balance was designed to weigh letters in a post office.

Anonymous said...

I actually considered the weights to increase x2 with every increment, but dismissed that possibility as being too difficult to work with. Rather, I expected something that would fit in with the decimal system. I would never have guessed about the ounces either. I am used to the metric system.


Oh well, thanks for the information. My mind is at ease now.