- Equilibrium - Balance control model

- Equilibrium - Balance control model last up date 2007/01/04

"Is it possible to change the weight or the balance of a fountain pen as it is according to the holder's condition in writing? "
--- We at Nakaya have been studying this subject. After experiencing a continuous process of trial and error, we finally reached this pen "Balance control model" It has a mechanism that a part called "Weight Ring" is inserted into a pen which has a spiral thread cut with the lathe on the whole inside of the barrel. The weight ring can be set at any position inside the barrel and as many as you like, so you can adjust the weight and the balance as you want.

*How to set the weight rings and adjust the weight and the balance.
(We explain here by using the Skeleton model pen so that you can see easily.)

1. The Skeleton model pen which doesn't have any weight ring yet.

2. Set the weight ring on the edge of the stick for inserting it,
and turn the stick and insert the ring into the barrel.

3. This is just the beginning of insert.

4. The ring is inserted around the center of the barrel.

5. The first ring is set at the center of the barrel.
The second ring just starts to be inserted.

6. The Skeleton model pen which has 2 weight rings inside the barrel.

These are actual products.

Regarding the nib finish, two tone type is available with additional cost. ($80)
5 weight rings are initially supplied.
If you would like more, one piece costs $5.

- Balance control model -

- Dimension & Price -

*Long size
total length (cap posted): 166mm/
(cap unposted, from the tip of the nib to the edge of the barrel): 144mm
weight (with a cap): 25g/(without a cap): 13g

*Portable size
total length (cap posted): 152mm/
(cap unposted, from the tip of the nib to the edge of the barrel): 131mm
weight (with a cap): 22g /(without a cap): 11g

*Weight Ring
1g per one piece

*Price*
Ebonite Urushi Black $585 / Acrylic Black $385
(Please choose the size.)
5 weight rings are initially supplied. If you would like more, one piece costs $5.

To Order Page

The Skeleton model

The above Skeleton model on this page is also a trial product.
If you would like, it is available and please input "the Skeleton model for Equilibrium" on the order form.