Pencil leads and fractions

Two surprise thrift store finds. 

The first is a Koh-I-Noor box of red pencil leads. Well, a box with one red pencil lead - it is however still in one piece! The card sleeve-box with wooden frame protected this sole remaining lead well, probably for more than 80 years.

Now, the label could have simply stated that it contains six (6) leads, or perhaps to be fancy it could have stated; 'half a dozen'. No, this label goes even fancier in fractional obfuscation - it contains 1/24 gross!  Nice :-)

The second find also has a fractional aspect. This is a Pelikan tube with HB leads of ~1.18 mm diameter. Great to find these on the cheap, because that is the size needed for many vintage mechanical pencils. The diameter of the lead for vintage mechanical pencils (Yard-O-Led) actually got started as 3/64 Inch. The metric 1.18 mm is a decent approximation for that :)

And it's the size for my mechanical pencil, now again well-stocked for leads :-)