Jewelry Ring "Ruler Ring" Surgical Stainless Steel 316L
Due to the structure of this product, the size cannot be adjusted afterward. Please ensure you confirm your accurate size before placing your order.
About Ring Sizing
This product is made to order upon receipt of your request.
Please note that cancellations cannot be accepted after an order is placed.
Please read the details at the bottom of the page carefully.
For current delivery times, please check the top of the website or refer to this link.
Machined from surgical stainless steel 316L.
The ruler length varies depending on the size.
For sizes 20 to 24, it is 20mm. For size 8, it is 14mm.
● Materials: Machined Stainless Steel
● Handcrafted in Tokyo, Japan (MADE IN JAPAN)
*If exposed to moisture, please wipe dry promptly with a soft cloth.
*Product specifications, appearance, and included accessories are subject to change without prior notice for ongoing refinement.
*Component shapes may be subtly updated as part of continuous product improvements.
*Actual colors may vary slightly depending on your monitor settings.
*As each piece is made to order, cancellations cannot be accepted once an order is placed.
Product Description
Ruler Ring
FACTRON Jewelry with a unique presence unlike anything else.
Designed to wear a ruler on your finger.
The scales are precisely engraved, so it can actually be used for measuring.
Made from machined surgical stainless steel 316L.
Original design.
Industrial design creates a new genre of accessories.
Since this item is machined from stainless steel, its size cannot be adjusted. Please be sure to order the correct size.





As shown in the image above, the length of the ruler part varies depending on the size.
For sizes 20 to 24, it is 20mm. For size 8, it is 14mm.