The design of the Onoto 'Pi' pen was created as a celebration of the famous 'irrational number' and features the first 314 digits of pi after the decimal point etched to the barrel.
Made from high density acrylic, this is a satisfyingly robust pen, with the plain barrel nicely set off by polished sterling silver trim in the form of 3 cap bands, a pocket clip inscribed with a chevron pattern and the Onoto logo, and a cap button, also featuring the Onoto logo.
Fitted with a gold-plated stainless steel Onoto size 7 nib, available in a range of sizes. Refill with widely-available standard pattern ink cartridges, or fit a converter (supplied with the pen) to use bottled ink.
Available with two weight options: 25g or 32g. Use the drop-down list to select your preference.
Dimensions: capped 144mm, uncapped 127mm, posted 166mm.
Supplied in a luxury gift box.
Additional Information
| Product Code: | ON97883 |
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| Advance Mechanism: | Capped |
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| Ink Type: | Liquid Ink |
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| Item Colour: | Black |
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| Item Material: | Resin |
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| Refill Type: | Refillable, Bottled Ink, International Standard Cartridge |
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| Tip Material: | Steel |
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| Tip Type: | Fountain Pen |
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Orders placed before midday Monday to Friday will normally be sent out the same day.
UK Orders
FREE Royal Mail Tracked 48 delivery for orders over £30, and just £3 for smaller orders. Tracked 24 is available as an option, for £2.50 on orders over £30, £5.50 on smaller orders. Royal Mail Special Delivery Guaranteed Next Day* available for £7.50, or FREE with any order over £175. No delivery surcharges for Northern Ireland, Highlands & Islands or anywhere else!
International
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Orders over 2kg
For all orders outside the UK, heavy orders may cost more to send, but the shipping cost will be displayed in the checkout before you commit.
More Information
For more, see our Delivery Information page.