Est. 2026 · Price: FreeEditor-at-large: The Hedgehog

Stationery Times

Brand: Möbius + Ruppert

Möbius + Ruppert Aluminium Ruler 30 cm: cm and Inch Scales

Compiled from 5 sources; we haven't tested this product ourselves yet. How we research

Quick answer

The Möbius + Ruppert aluminium ruler (item 1830 0000) is a light 30 cm double ruler with a black printed centimeter scale and a 12-inch scale and a bevelled edge. The maker lists it for school, office and technical use. Its product page says it is made by partners in Asia, not at the maker's German site.

On this page10 sections
Möbius + Ruppert aluminium ruler, 300 mm long at 1 mm = 3 px, with black cm and inch scales and a magnified view of the first 50 mm
The 300 mm ruler at 1 mm = 3 px with its first 50 mm magnified; width and tick detail by eye, colors sampled from the maker's photo. Original illustration made for this guide. © Stationery Times.

Product facts

Product
Möbius + Ruppert Aluminium Ruler 30 cm / 12 inch
Brand
Möbius + Ruppert
Brand origin
Germany
Made in
Asia (premium partners, per the product page)*
Material
Aluminium, black printed scale
Price range
$$$5–20 per item
Colors

Aluminium

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Notes on these facts
  • Made by Möbius + Ruppert (Erlangen). Made in Asia (premium partners, per the product page): The product page says the ruler is made by premium partners in Asia and names no country. The company page says every product with the label is made 100% in Erlangen with no components from the Far East. The product page is the more specific statement, so we use it, and the maker does not explain the difference. Source. Price: example listing.
  • Colors: names per Möbius + Ruppert (maker): aluminium ruler product photo, checked November 5, 2026. The maker lists the material as aluminium with a black printed scale and no color options. The tint is sampled from its product photo. Tints are representative, not measured. Shops stock different colors.
  • How we test and disclose samples: How we test stationery.
  • Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).

Key takeaways

  • The maker lists the length as 30 cm and 12 inch, with a printed black scale in both units and a bevelled edge; width, thickness and weight are not stated.
  • Its product page says the ruler is made by premium partners in Asia, while the company page says all labelled products are made in Germany; we cannot reconcile the two.
  • The maker lists use with pencil, colored pencil, ink pen and fineliner, and gives the use as school, office and technical.
  • At 300 mm the ruler overhangs the long edge of an A4 sheet (297 mm) by 3 mm and US Letter (279.4 mm) by 20.6 mm.
  • A European retailer's euro listing for a 30 cm Möbius + Ruppert aluminium ruler converts to about the bottom of our $$ band ($5 to $20) on November 5, 2026; the maker shows no price.

What is the Möbius + Ruppert aluminium ruler?

It is a 30 cm metal ruler with a printed centimeter scale and a printed inch scale. Möbius + Ruppert, a German maker of sharpeners, drawing instruments and cutters, lists it as item 1830 0000, a light aluminium double ruler. The photo shows a black band with white numbers for centimeters along the top and a smaller inch band along the bottom.

We read the maker’s German pages on November 5, 2026. Unlike the maker’s sharpeners, this ruler’s page says it is made by partners in Asia.

What are the ruler’s specs?

Aluminium, 30 cm and 12 inch, black printed scales, bevelled edge. The maker does not give width, thickness or weight.

Spec Value
Maker Möbius + Ruppert (Erlangen, Germany)
Item number 1830 0000
Material Aluminium
Length listed 30 cm (11.8 in) and 12 inch (304.8 mm)
Scale Printed in black, centimeters and inches
Edge Bevelled
Pens (maker) Pencil, colored pencil, ink pen, fineliner
Use (maker) School, office, technical
Width, thickness, weight Not stated
Price band ($$ = $5 to $20) $$ (provisional)

Why does it say both 30 cm and 12 inch?

One ruler carries both units, so you can read metric and imperial without a second tool. The two lengths are not identical: 12 inches is 304.8 mm, which is 4.8 mm more than 30 cm. The maker lists both on its page and gives no overall length, so we cannot say where the body ends against the 30 cm and 12 inch marks.

Will it fit A4 and US Letter?

It is longer than both sheets, so it spans the long edge of either. At 300 mm it overhangs A4 (297 × 210 mm) by 3 mm and US Letter (11 × 8.5 in, 279.4 × 215.9 mm) by 20.6 mm.

A 300 mm ruler beside A4 and US Letter outlines at 1 mm = 1.45 px, overhanging the long edges by 3 and 20.6 mm
The 300 mm length beside A4 and US Letter; paper sizes are standard, the ruler's width is our drawing. Original illustration made for this guide. © Stationery Times.

How does it compare with the maker’s other 30 cm rulers?

The aluminium ruler is the light metal one; the maker also sells wood and recycled plastic. Facts are the maker’s product pages.

Ruler Material What the maker says
Aluminium 30 cm / 12 inch Aluminium Printed cm and inch scale, bevelled edge, partners in Asia
Doppelskala wooden ruler 30 cm Beech wood, metal inlay Natural finish, double scale for left and right hand
Eco 2 ruler 30 cm 100% recycled plastic (PCR) Embossed scale, ink edge and bevel

For a smaller metal ruler see the Midori Aluminum Ruler 15 cm; for a folding brass one, the Makers Cabinet Stria.

Who is the aluminium ruler for?

It suits anyone who needs a light 30 cm metal ruler with both centimeters and inches for school, office or technical work. Those are the uses the maker lists, with pencil, colored pencil, ink pen and fineliner.

Skip it if you want an engraved scale or a stated accuracy: the scale is printed, and the maker gives no tolerance. We have not tested it.

Where is it made, and what does it cost?

Asia, per its product page, though the company page says Germany. The product page says made by premium partners in Asia and names no country; the company page says labelled products are made 100% in Erlangen. We follow the product page. Pen Store listed a 30 cm aluminium ruler from the maker at 4.60 euros including VAT (about US$5.15) on November 5, 2026, but did not say it was this exact item, so our $$ band is provisional. The maker shows no price on its own pages.

Frequently asked questions

How long is the ruler?

The maker lists 30 cm and 12 inch. Twelve inches is 304.8 mm, so the two figures differ by 4.8 mm; the maker gives no overall length, width or thickness.

Is the scale printed or engraved?

Printed. The maker's page says the scale is printed in black, in centimeters and inches.

Does it have a ruling edge for ink?

The page lists a bevelled edge. It does not list a separate ink edge; the plastic Eco 2 ruler from the same maker does.

What pens can you use with it?

The maker lists pencil, colored pencil, ink pen and fineliner.

Is it made in Germany?

Not according to its own product page, which says it is made by premium partners in Asia. The company page says labelled products are made in Erlangen; the maker does not explain the difference.

Is it heavy?

The page calls it a light metal ruler. No weight is stated.

What other 30 cm rulers does the maker sell?

A beech wooden ruler with a double scale for left and right hands and a recycled-plastic Eco 2 ruler with an embossed scale, per the maker's pages.

How much does it cost?

It sits near the bottom of our $$ band ($5 to $20). A European retailer's euro listing for a 30 cm aluminium ruler from the maker converts to about that on November 5, 2026, but does not state it is the same item.

Sources (5)

  1. Möbius + Ruppert: Alu-Lineal 30 cm / 12 inch (item 1830 0000: aluminium, printed cm and inch scale, bevelled edge, pens, partners in Asia; read November 5, 2026)
  2. Möbius + Ruppert: Doppelskala-Holzlineal 30 cm (beech, metal inlay, scale for left and right hand; read November 5, 2026)
  3. Möbius + Ruppert: ECO 2 Lineal 30 cm (100% recycled PCR, embossed scale, ink edge and bevel; read November 5, 2026)
  4. Möbius + Ruppert: Unternehmen (founded 1922, made 100% in Erlangen, no Far East components; read November 5, 2026)
  5. Pen Store: M+R Aluminium Ruler 30 cm (retailer listing, 4.60 euros including VAT; read November 5, 2026)

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