Inoue Kogu Seisakusho Kurogane Kazura Fire-Forged Straight Ruler Inoue Kogu Seisakusho, a metalworking manufacturer, was founded in 1911 as Inoue Knife Seisakusho. "Kurogane Kazura" is a brand of stationery items created by utilizing the fire-forging techniques cultivated since its founding, which are used in the production of kitchen knives and swords. The Fire-Forged Straight Ruler is a 15cm ruler made by fire-forging 3mm thick stainless steel and hammering it with a hammer. The scale is laser-engraved, and the numbers are engraved in Chinese numerals: "零 (zero), 伍 (five), 拾 (ten), 拾伍 (fifteen)." With its hammered texture and substantial weight, this is a masterpiece that provides satisfaction to the owner. It comes in a leather case. ■ Specifications ・Size: 170 x 23.5 x 3mm ・Weight: 90g ・Leather case size: 185 x 36 x 8mm ・Leather case weight: 20g ・Comes in a paulownia wood box ・Box size: 215 x 63 x 20mm I am selling this because it didn't fit in my pen case. All accessories are included. Returns and exchanges are not accepted. Instant purchase is welcome. Search terms Kobo Kudzu, mechanical pencil, maple burl, limited edition, rare limited colors, Nohara Kogei, Karin burl, Karin red and white, black persimmon, Staedtler, Pentel Smash, Loft limited, Okayama denim, lamy, zelkova, fixed lead sleeve, blue black, gunmetal, Pelikan Souverän M800 K800 K805 pelican pencil wedge marble wood premium Karin burl rare valuable items Lamy 2000 Uni Jetstream mechanical pencil mechanical pencil set Rotring Kobo Kudzu Craft A Pentel MONO HBK handmade studio Sharbo X Keyaki lead case fountain pen Rotring wood shaft wood shaft mechanical pencil Lupo pen case Pure Malt Muji Haco Sharbo Zebra Pentel Kaweco Pencil Special Blue Silver mechanical pencil Stabilized wood Rosewood craftA Craft A Bonan pen Seesar