automatic pencil2

Last week's answer is ①.
Did you search "シャーペン" in google? This picture is found in picture of shopping page. If you cannot find it , I'm sorry.
This week topic is automatic pencil part 2. I want to introduce two Japanese hi-quality automatic pencil "Kurutoga" and "Dr.glip".
①Kurutoga
Kurutoga is very revolutionary automatic pencil. If you use kurutoga , you can wright words sharply. I introduce its mechanism.
1.What is "Kurutoga engine"?
"Kurutoga engine" is automatic lead turning structure. This is the first structure which notice the point of automatic pencil's lead and is developed . There are three gears in the structure.The central gear that joins to lead goes up and down depending on stress of writing .Up and down gears make the central gear and lead turn by biting . Kurutoga's lead turns an angle of 9 degrees by one writing .

②Ｄｒ.grip
Dr.grip may be most famous automatic pencil in Japan . When you use a nomal automatic pencil , you have to knock automatic pencil to take out lead . But Dr.glip breaked its common sense !!!! Dr glip doesn't need knocking .You can take out lead from automatic pencil by shaking it .
1.Ｉｎｔｒｏｄｕｃｔｉｏn ~ Dr.glip is 22 years old ~
"The father of "The automatic pencil that is kind to neck and sholder arm" is Dr.glip "
Before Dr.glip was sold the main type of ballpen is like pencil .At the time , people who work in the job that has to write many copy of slip in a day have no choice but the thin bollpen like pencil . But thin ballpen is not adequate to use long time or strong writing stress. So , many people strained their hands . Dr.glip was inventioned to ease these symptom . It sought the shape that dosen't task  hands  from  the human engineering point of view and discovered original glip diameter. Moreover Dr.glip adopted rubber which has fitting and spring and does not slip as glip .
Althogh , at present , a normal ballpen or automatic pencil which has glip rubber and is thick stem are regard as natural , the father  of them is  Dr.glip.
2.History of Dr.glip
The first Dr.glip (ballpen version) was born in 1991
At 1992 , Automatic pencil version  Dr.glip was ininventioned . It had special function "FureFure" . This function is needless knocking automatic pencil syatem.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　At 1994 , new Dr.glip which has antibacterial effect. It is also revolutionary !!!!!!
At 2006 , "Dr.glip CL" was sold . It was inventioned to student. It didn't have clip and had hole which can be added strap to .Why? The rason is no clip automaticprncil is easy to enter to pencase and can entertain users.I used "Dr.glip CL" in junior high school.  "CL"=CLIPLESS , CLEAR , LIGHT.

Dr.glip has evolved for 22 years along the flow of era.


Bonus"Introduction of Dr.glip"

 

 

 

 

 

Thank you for reading.

Question
Which did I use in junior high school ????
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