--- title: "Midori Aluminum Multi Ruler: 15 cm Folds to 30 cm" canonical: "https://stationerytimes.com/guides/midori-aluminum-multi-ruler/" description: "Midori Aluminum Multi Ruler explained: 159 mm closed, 310 mm open, 15-degree angle marks, laser-engraved scale with 0.5 mm steps, made in Japan, with price." category: "Accessories" type: "Folding ruler" published: 2026-10-31 updated: 2026-10-31 author: "Ellis Penhale" publisher: "Stationery Times" sources: 1 products: - name: "Midori Aluminum Multi Ruler 30 cm, Silver A (42285006)" brand: "Midori" brand_origin: "Japan" made_in: "Japan" material: "Aluminum" price_band: "$$ ($5–20 per item, typical US retail, October 2026)" manufacturer: "Designphil Inc. (Tokyo)" model: "Aluminum Multi Ruler 30 cm" mpn: "42285006" url: "https://www.midori-store.net/SHOP/42285006.html" --- # Midori Aluminum Multi Ruler: 15 cm Folds to 30 cm > The Midori Aluminum Multi Ruler is a folding aluminum ruler that is 159 mm long closed and 310 mm open. Its center hinge carries angle marks every 15 degrees, and the laser-engraved scale has 0.5 mm steps over the first 5 cm. Midori lists it as made in Japan at 1,760 yen with tax (about US$11.14), in our $$ band. - URL: https://stationerytimes.com/guides/midori-aluminum-multi-ruler/ - Category: Accessories - Author: Ellis Penhale - Published: 2026-10-31 - Updated: 2026-10-31 ![Midori Aluminum Multi Ruler drawn to scale open at 310 mm with its center hinge, and folded at 159 mm](https://stationerytimes.com/images/raster/midori-aluminum-multi-ruler-illustration-16x9.png?v=981b3ce4) *The folding ruler open and folded, drawn to scale (1 mm = 2.5 px).* Original illustration made for this guide. © Stationery Times. Original drawing (SVG): . Drawings © 2026 Stationery Times, reusable with credit under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ## Product facts | Product | Brand | Brand origin | Made in | Material | Released | Price range (typical US retail, October 2026) | |---|---|---|---|---|---|---| | Midori Aluminum Multi Ruler 30 cm, Silver A (42285006) | Midori (by Designphil Inc. (Tokyo)) | Japan | Japan | Aluminum | – | $$: $5–20 per item | - Made in (Midori Aluminum Multi Ruler 30 cm, Silver A (42285006)): Japan. Midori's online store lists the country of origin as Made in Japan. Source: https://www.midori-store.net/SHOP/42285006.html ## Key takeaways - It folds from 310 mm open to 159 mm closed, about 29 mm wide and 4.5 mm thick, per Midori. - The center axis carries angle marks every 15 degrees, so it measures angles as well as lengths. - The first 5 cm of the scale is graduated in 0.5 mm steps; the laser-engraved marks resist rubbing off. - It costs 1,760 yen with tax (about US$11.14) and is aluminum, which Midori says suits cutter work. - Midori lists it as made in Japan; part number 42285006 is the Silver A version. ## What is the Midori Aluminum Multi Ruler? **It is a 30 cm ruler that folds in half.** Midori describes it as a simple folding multi ruler, light and strong in aluminum, and says it suits work with a craft knife. Open it for a full 30 cm; fold it when not in use to carry it in a breast pocket or pen case. ## What are the specs? **310 mm open, 159 mm closed, 4.5 mm thick.** Midori lists: | Item | Value | |---|---| | Body, open | 310 × 18.5 × 4.5 mm | | Body, closed | 159 × 29 × 4.5 mm | | Package | 184 × 80 × 12 mm | | Material | Aluminum | | Part number | 42285006 (Silver A) | | Price | 1,760 yen with tax (about US$11.14) | The open length is almost exactly twice the closed length (310 mm against 159 mm), which is the point of the fold. ## What can the scale and hinge do? **Measure angles and fine distances.** The center axis carries angle marks every 15 degrees, so the folded halves can be set to 15, 30, 45 degrees and so on. The scale is laser engraved, which Midori says does not wear off with rubbing, and the first 5 cm is graduated in 0.5 mm steps. A second scale starts from the end, which makes depth, height and distance easier to measure. ## Who is it for? **For people who need 30 cm but carry little.** Folded it is 159 mm long, and unfolded it measures a full A4 short side with room to spare, since an A4 sheet is 210 mm wide. The angle marks make it handy for quick layout work. It is not a precision straightedge, and Midori does not claim it is. ## How does it compare with the 15 cm rulers? **It trades thickness for length.** Midori's single-piece [15 cm aluminum ruler](https://stationerytimes.com/guides/midori-aluminum-ruler-15-cm/) is 3 mm thick and 440 yen; the multi ruler is 4.5 mm thick and costs 1,760 yen, four times as much by our arithmetic, but covers 30 cm. For a pocket bookmark ruler see the [Midori Clip Ruler](https://stationerytimes.com/guides/midori-clip-ruler/), and for brass the [TRAVELER'S COMPANY brass ruler](https://stationerytimes.com/guides/travelers-company-brass-ruler/). ## How fine is the 0.5 mm scale? **Fine enough for small parts.** Over the first 5 cm, 0.5 mm steps give 100 divisions, by our arithmetic, against 50 on a 1 mm scale. Beyond that the scale follows the standard layout. The marks are laser engraved, which Midori says do not rub off, so they stay legible with use. ## Will the price change? **Possibly, soon.** On the day we read the page, Midori's store said it was running system maintenance for a price revision, that purchases were paused from 5 pm on October 30 until 11 am on November 2, and that sales at the current price ended at the start of that pause. So the yen price here is the pre-revision price, and the new one may differ. Check the store before you budget. ## Where is it made, and what does it cost? **Midori's store says Made in Japan.** At 1,760 yen with tax (about US$11.14) the ruler is in our $$ band ($5–20). We read only the silver version's page, so check the other colors before ordering. ## Frequently asked questions ### How long is it open and closed? 310 mm open and 159 mm closed, per Midori. ### Can it measure angles? Yes. The center axis is marked every 15 degrees. ### How fine is the scale? The first 5 cm is graduated in 0.5 mm steps; the rest follows the standard scale, and there is also a scale from the edge for depth and height. ### What is it made of? Aluminum, which Midori says is light, strong and suited to cutter work. ### How much is it? 1,760 yen with tax, about US$11.14. ### Where is it made? Midori's store lists Made in Japan. ### Will it fit in a pen case? Closed it is 159 × 29 × 4.5 mm, small enough for a breast pocket or pen case, per Midori. ## Sources - [Midori Online Store: Aluminum Multi Ruler 30 cm Silver A product page (size, scale, angle marks, origin, price; read October 31, 2026)](https://www.midori-store.net/SHOP/42285006.html)