Möbius + Ruppert Eternity: Glass Jar Pencil Sharpener

Möbius + Ruppert Eternity glass jar sharpener in front view, its lid with two holes from above, and the 8.2 and 11.2 mm pencil circles — Jar, lid and holes drawn by eye; the two circles at the right are the listed pencil diameters, 8.2 and 11.2 mm, to scale. Original illustration made for this guide. © Stationery Times.

Product facts

Product: Möbius + Ruppert Eternity Glass Double Pencil Sharpener
Brand: Möbius + Ruppert
Brand origin: Germany
Made in: Germany^*
Material: Glass jar, tinplate lid, paper insert, metal sharpening unit
Price range: $$$$20–75 per item
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Notes on these facts

Made by Möbius + Ruppert (Erlangen). Made in Germany: The company page says every product carrying the Möbius + Ruppert label is designed and produced 100% at its Erlangen site. The Eternity product page does not repeat it; the retailer The Paper Mind also lists it as made in Germany. Source. Price: example listing.
How we test and disclose samples: How we test stationery.
Price bands are typical US retail, checked October 2026.

Key takeaways

The maker lists two pencil diameters, 8.2 mm and 11.2 mm, a standard cone, and use with graphite and colored pencils.
Its listed materials are glass, tinplate and a paper insert around a metal sharpening unit: four parts, with no plastic named.
The maker says its glass-and-tinplate sharpeners use a magnesium unit screwed on without glue, with a replaceable blade.
The maker describes the jar as based on a commercially available glass form and recyclable; capacity, size and weight are not stated, and the maker dates its company to 1922.
Möbius + Ruppert says all products with its label are made 100% at its Erlangen site; we found one retailer listing, in our $$$ band ($20 to $75).

What is the Möbius + Ruppert Eternity?

It is a canister sharpener with a glass jar, where most are plastic. Möbius + Ruppert, a German maker of sharpeners and drawing instruments, lists it as item 0934 0000: a double-hole sharpener for graphite and colored pencils, with a tinplate lid, a metal sharpening unit and a paper insert. The maker says the glass is unprinted and based on a commercially available glass form.

We read the maker’s German pages on November 5, 2026. The maker’s materials page calls this kind of build a sustainable material cycle: glass for the shavings container, tinplate for the screw lid, and a sharpening unit screwed on without glue.

What are the Eternity’s specs?

Two holes, for 8.2 mm and 11.2 mm pencils, in a screw-lid glass jar. The maker’s page does not give size, capacity or weight.

Spec	Value
Maker	Möbius + Ruppert (Erlangen, Germany)
Item number	0934 0000
Container	Unprinted glass jar, screw lid
Lid	Tinplate
Other materials	Paper insert, metal sharpening unit
Holes	Two (double)
Pencil diameters	8.2 mm (0.32 in) and 11.2 mm (0.44 in)
Pencil types	Graphite and colored pencils
Cone	Standard
Use (maker)	Office
Size, capacity, weight	Not stated
Price band ($$$ = $20 to $75)	$$$ (provisional, one retailer)

Which pencils fit which hole?

The larger hole is for thick pencils at 11.2 mm, the smaller one for standard pencils at 8.2 mm. The maker lists both diameters on one product and a standard cone, which suits everyday graphite and colored pencils. It does not say which hole cuts which cone, or whether the two holes have separate blades.

For long-point sharpening, the maker’s Granate brass sharpener is a one-hole alternative with a standard cone, and the Pollux and Castor in the same range make longer points.

What is the Eternity made of?

Glass, tinplate, paper and metal, with no plastic named. The maker’s materials page says its glass-and-tinplate canisters use easily separable, recyclable materials: glass for the container, tinplate for the screw lid, and a magnesium sharpening unit that is screwed on without glue and has a replaceable blade. The Eternity page lists only a metal sharpening unit, so magnesium is the range’s description and not confirmed for this item.

The Eternity in three parts: tinplate lid with two sharpening holes, glass jar and paper insert, drawn by eye — The parts the maker lists; proportions are our drawing, as no size is published. Original illustration made for this guide. © Stationery Times.

Who is the Eternity for?

It suits people who want a desk sharpener that avoids plastic and sharpens both standard and thick pencils. The 8.2 mm and 11.2 mm holes and the glass jar are the facts behind that: you can see how full the jar is, and the maker’s page counts the materials as recyclable.

Skip it for travel or a pencil case: it is a glass jar and the maker gives no size. For a pocket brass option see the Granate, and for how sharpener types compare see best pencil sharpeners.

What does the maker not say about the Eternity?

It gives no size, no capacity, no weight and no blade detail. The page does not say how many shavings the jar holds, how tall it is, or how much it weighs, and it does not say whether the two holes share one blade or have one each. It also lists no color options, since the glass is clear and the insert is paper.

Maker pages are the only source we used for specs, and we found no independent review of this model. Until one appears, treat the build notes above as the maker’s own claims.

Where is the Eternity made, and what does it cost?

Germany, per the maker, and in our $$$ band. Möbius + Ruppert says everything with its label is made 100% at its Erlangen site. The only retailer listing we found was The Paper Mind’s on November 5, 2026, in our $$$ band ($20 to $75); the maker shows no price, so the band is provisional. For how to use the sharpener well see how to sharpen a pencil.

Frequently asked questions

What pencil sizes does the Eternity take?

Two: 8.2 mm and 11.2 mm, according to the maker. The larger hole suits thick colored pencils; the smaller one standard pencils.

Is the Eternity plastic-free?

Its listed materials are glass, tinplate and a paper insert, with a metal sharpening unit. The maker's materials page calls such glass-and-tinplate canisters plastic-free.

Can you replace the blade?

The maker's materials page says its glass-and-tinplate canisters use a magnesium sharpening unit screwed on without adhesive, with a replaceable blade. The Eternity page itself says only metal sharpening unit.

Does the jar seal?

The lid is a screw lid per the maker, which keeps shavings in when closed. The maker does not state the jar capacity.

Is the glass printed?

The maker lists the glass as unprinted. The green label in its photo is the paper insert, whose print the page does not describe.

What point does it make?

A standard cone, per the maker. It has no long-point option; for that see the Pollux and Castor brass sharpeners.

Is the Eternity made in Germany?

The maker's company page says every product with its label is made at its Erlangen site, and a retailer also lists it as made in Germany.

How much does it cost?

We found one retailer listing, in our $$$ band ($20 to $75) on November 5, 2026. The maker shows no price, so the band is provisional.

Sources (5)

Plain-text version for AI agents: mobius-ruppert-eternity-glass-sharpener.md · Spotted an error? See how we check facts.