u/tazzyviolin

I spoke with someone at Pentel America yesterday regarding the notch going through the middle of the top of my Techniclick.

The man put me on hold twice.

He told me that they had "no idea" why the notch was manufactured this way.

The man took my contact information, and he promised that he'd return with an answer.

He was quite intrigued himself! 😁

I'll let you know when I receive an answer!

Hi everyone,

I'm writing with a question regarding lead diameters.

My friend asked why do lead diameters only come in odd numbers (0.3, 0.5, etc)?

I'd like to know the answer to this question myself.

Thanks!