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 :

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

    Ravi

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

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

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

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

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

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

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  6. 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.

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  7. 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.

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