Question 1

What makes the pencil automatic?

Accepted Answer

The term "automatic" comes later, as a term when the first mechanical pencils required that you twist them to advance the lead.  By twisting it however much, more or less came out.  The Pentel Sharp was among the first, if not the very first pencil to use a push-button that advanced the lead a Specific Amount with every click.  This is what was "automatic"--just the right amount of lead advancing to the tip with a single, quick of a button.  It was novel at the time, and the term "automatic" was applied to many things in the 70s that gained the effect of push-button operation, or hands-free help, like self-winding automatic watches, switch-blades, automatic transmissions, automatic umbrellas, auto shut-off faucets and sensors.  The term was true to form, not a sales gimmick but a real improvement in mechanical pencils.

Question 2

How do these compare in writing comfort with Twist Erase with rubber grip? Thanks

Accepted Answer

These are high quality drafting type pencils, but I have used these for many years for general writing and have never had any comfort issues.  If you have used instruments with rubber grips and prefer them, I would say go that way.  I hope this response helps you.

Question 3

Does this pencil have an automatic feed where when the lead breaks the support piece moves and loads a new lead?

Accepted Answer

No, it does have the “support piece”- a sheath that covers the lead as it’s advanced through the opening. However, should it break, you have to physically click the pencil top to advance the lead. That sheath is only there to lessen the chances of breaking the lead with too much pressure, it doesn’t have the fancy mechanism that other pencils do, but it’s still an excellent pencil nonetheless.

Question 4

How can you tell the model number of the eraser that fits this P209?

Accepted Answer

I have green, red and white erasers in tubes and they all fit my P205, P207 and P209 pencils. The tubes don't have a part number on them however the information on the tube only states "Pentel Eraser Refills".  If you order, i believe they will work.

ASIN	B0026ZPWUU
Additional Features	Ergonomic, Pre-Sharpened, Refillable
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#91,176 in Office Products ( See Top 100 in Office Products ) #649 in Mechanical Pencils
Body Shape	Round
Brand	Pentel
Brand Name	Pentel
Color	Black
Customer Reviews	4.8 out of 5 stars 92 Reviews
Drill Point	Fine
Global Trade Identification Number	00072512005446, 00072512005460
Grip Type	Standard
Hand Orientation	Ambidextrous
Hardness	HB
Included Components	Mechanical Pencils, Lead Refills, Replaceable Erasers
Ink Base	Water
Ink Color	Black
Item Diameter	0.5 millimeters
Item Dimensions	5.75 x 2.88 x 1.13 inches
Item Weight	0.1 kg
Line Size	0.5mm
Manufacturer	Pentel
Material	polymer
Material Type	polymer
Model Name	Pentel Sharp Automatic Pencil, 0.5mm Lead Size, Black Barrel(P205A)
Model Number	P205A
Pattern	Single
Recommended Uses For Product	Drawing, Sketching, Writing
Style	0.5mm
Theme	Precision
UPC	072512005446 799198917282
Unit Count	12 Count
Warranty Description	Limited Lifetime Warranty - USA Only
Writing Instrument Form	Mechanical Graphite Pencil
Writing Technique	pencil lead

Pentel Sharp Automatic Pencil, (0.5mm), Black Barrel, Box of 12 (P205A)

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