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	B002VKWSYI
Additional Features	Refillable
Age Range Description	Adult
Best Sellers Rank	#23,164 in Office Products ( See Top 100 in Office Products ) #172 in Mechanical Pencils
Body Shape	Round
Brand Name	Pentel
Closure Type	Retractable
Color	Yellow
Customer Reviews	4.8 4.8 out of 5 stars (5,573)
Drill Point	Medium
Global Trade Identification Number	00072512080481, 00801593303871
Grip Type	Ribbed
Hand Orientation	Ambidextrous
Hardness	HB
Included Components	No
Ink Base	Pigment
Ink Color	Yellow
Item Diameter	0.9 Millimeters
Item Dimensions	6.2 x 1.6 x 0.5 inches
Item Weight	0.1 Pounds
Line Size	0.9
Manufacturer	Pentel
Material Type	Metal
Model Name	PENTEL Sharp Mechanical Drafting Pencil, 0.9 mm, Yellow Barrel, 2/Pack (P209BP2K6)
Model Number	P209BP2-K6
Pattern	Single
Recommended Uses For Product	Drafting, Technical Drawings
Style	0.9mm
Theme	technical drawing
UPC	801593303871 799916408078 638084773277 640206342612 031113321546 809302087142 804993566877 728131171993 031112272559 072513341062 823019717741 787543720106 050090017969 787718110527 642125327480 012304031376 045555781981 072513341512 800011346964
Unit Count	2.0 Count
Warranty Description	Contact Manufacturer
Writing Instrument Form	Graphite Pencil
Writing Technique	pencil lead

Sharp Mechanical Pencil, (0.9mm), Bold Line, Yellow Barrel, Pack of 2 (P209BP2-K6)

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