On a graph it means two points, so on a graphing board it’s two points, or more in multiples of two.
What does 1 HB means on a keyboard?
It means zero.
How do I tell if I have a double-barrelled pencil in a pencilcase?
You’ll notice in the illustration above, I have the sharp end of the pencil up against the base of the pencil case.
Is this something you’re used to seeing?
No, there are many other examples of a double-barrelled pencil being in a base and sharp end.
How is double-barrelling defined?
Double-barrelled pens are marked with the number 1HB.
The two lines in the illustration above are double-barrelled. They’re made of metal and have only one barrel.
When do double-barrelled pens get discontinued?
Double-barrelled pens were discontinued from about the mid-1950s.
Can pen manufacturers put back any part of the pen you buy?
Yes, you can replace any part of a pen. That includes all caps and barrels, too.
I’m a pen-phobe, can I use a pen with double-barrelled pen ink?
Unfortunately, no way. It would be like trying to use a pen without a lever spring. It might be possible, but it’s a pretty difficult task. You’d also be hard-pressed to find someone who has a pen with both a lever spring nib and a double-barrelled barrel.
For those asking, double-barrelled is defined as “having two barrels or parts of two barrels”.
The only exceptions we can think of are nibs that double-barrelled.
What can I do if an ink isn’t properly manufactured?
You would have an ink problem if your ink is not properly manufactured. That’s because an ink is made up of a number of ingredients. Sometimes more than one ingredient is mixed in a particular pen. So in most cases ink manufacturers may have instructions which state how to mix each ingredient. The first ink manufacturer’s instructions would be the most reliable, with the least amount of mistakes.
How common is a double-barrelled pencil?
Probably 1 out of every 5 fountain pens.
Wouldn’t an ink bottle be perfect for a double-
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