Grade 5 titanium with a TiSiNx blue finish: durable, ergonomic, and perfectly balanced. The Sentry combines advanced engineering and refined design for an elevated writing experience.
| Brand | Gravitas |
| Series | Gravitas Sentry |
| Color | Blue |
| Edition | Regular |
| Body Material | Titanium |
| Nib Material | Steel |
| Nib Type | Hard |
| Filling Mechanism | Standard Cartridge/Converter |
| Converter Included | Yes |
| Cap Type | Screw-Cap |
| Trim | Silver |
| Length (closed) | 146 mm |
| Length (body) | 139 mm |
| Length (cap) | 61 mm |
| Diameter (grip) | 14 mm |
| Weight (overall) | 54 g |
The Gravitas Sentry Raw Grade 5 Titanium TiSiNx is the upgraded version of the Sentry line – the larger sibling of the Entry, slightly heavier yet perfectly balanced and ergonomic.
The cap and barrel are machined from solid Grade 5 titanium, complemented by a stainless steel grip section for optimal balance. All components feature the advanced TiSiNx (titanium silicone nitride) finish, which increases surface hardness, reduces friction, and delivers a striking blue sheen while maintaining the raw metal character.
The grip section, 25 mm long and tapering from 13.25 mm to 11.5 mm, is precisely engineered for stability and comfort. The Sentry also incorporates two o-rings: one on the section, securing a tight fit with the barrel, and another on the barrel, ensuring an airtight cap seal and preventing accidental uncapping.
The cap, fitted with triple-start ACME threads, unscrews smoothly in 2.25 turns and includes a Delrin sleeve that allows safe posting without leaving marks. When posted, the Sentry transforms into a full-sized, well-balanced fountain pen.
The Gravitas Sentry Raw Titanium TiSiNx comes fitted with a Gravitas size 6 steel nib and ABS feed. It fills via standard international cartridge/converter, with a converter included.
A pen that combines engineering, resilience, and refined design for a truly elevated writing experience.
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