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Home Shop FP Bestsellers Gravitas - Sentry Alu-Bronze
GravitasSKU: TTP1

Gravitas - Sentry Alu-Bronze

€170,00 /
Tax not included. Shipping calculated at checkout.
5.0 (2 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Sentry Alu-Bronze
€170,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Meet the Sentry fountain pen, the larger sibling to the entry-level model from gravitas. While slightly weightier than its counterpart, the Sentry maintains a comfortable and user-friendly design, thanks to its weighted section. With triple-start cap threads, the cap effortlessly disengages in just 2.25 turns.

The 25mm-long section, ranging from 13.25mm to 11.5mm in width, is expertly crafted from Aluminium Bronze alloy. The Aluminium-Bronze alloy used for the Sentry is a special alloy highly ductile, highly termo conductive used primarily energy equipment, aeronautica and nautical industries for valves, high strength bushings, gears, cams, propeller blades and shafts. The exposed alloy is sleek and the section adorned with micro-machined grooves, section ensures a secure grip during every writing session. Equipped with a Gravitas-production size 6 steel nib compatible with Jowo No. 6 threads and abs plastic feeder, the Sentry offers versatile writing options, including Extra Fine, Fine, Medium, Broad and Fine Flex.

Enhancing your experience, the Sentry comes with a standard international converter provided with each fountain pen.

Elevate your writing journey with the refined craftsmanship of the Sentry fountain pen.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Gold
- body material: Aluminium Bronze alloy
- cap type: Screw-cap
- filling mechanism: Provided Converter / Standard International Cartridge
- nib material: Steel
- nib size: Extra Fine, Fine, Medium, Broad, Fine Flex
- postable: Yes
- trim: Silver color
- length overall (closed): 147 mm
- length overall (posted): 143 mm
- body length: 138 mm
- cap length: 60 mm
- body diameter: 13,25 mm
- cap diameter (without clip): 15 mm
- weight (overall):  grams
- body weight:  grams
- cap weight:  grams

Specifications

Brand: Gravitas
Model: Sentry
Edition:
Color: Gold
Body Material: Metal
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Converter
Postable:
Yes
Trim Color:
Length Overall (Closed): 147 mm
Length Overall (Posted): 143 mm
Body Length (Uncapped):
138 mm
Body Diameter: 13.25 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall:
Body Weight:

Customer Reviews

Based on 2 reviews
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D
Destiny Smith
Great Alu-Bronze Pen

Let me begin by saying that this pen is nearly perfect. The Gravitas produced #6 steel nib is very smooth, and the plastic feed provides for excellent ink flow. The pen is massive; the body (of the very similar brass version) weighs 58.4 g, the whole pen weighs 88.5 g. HOWEVER...don't let that weight scare you, when writing with this pen, most of the weight will rest on the web of your hand (between index finger and thumb), and the inertia combined with the smoothness of the nib makes this a very pleasant writing experience. The grip section is relatively girthy, 11.5mm at its most narrow point. I find small diameter grip sections to be much more fatigue inducing than sheer weight of the pens.
Correction on the cap threads: they are double-start, not triple starts, are Acme threads, and the cap is released in 3/4 of a turn.
There are no O-rings to act as seals, or friction brakes for parts that randomly want to disassociate themselves from the rest of the pen. Also, there is no Delrin liner inside the cap, meaning that you might want to avoid posting the cap on the back of the pen to avoid scratching the pen body.
Last item: appearance. The pen is flawless when it arrives, but it will start to accumulate scratches and scuffs as time goes on. Also, it will take longer for a patina to form on this pen than regular brass or copper pens. That's to be expected. Unless you get run over by a herd of Velociraptors, or you drop the (uncapped) pen on its nib, this pen is unlikely to be so damaged as to be non-repairable. You can replace the nib unit, you could even replace it with a JoWo produced nib unit, although the Gravitas nib units are as good as any JoWo #6 Steel nib. NOTE: make sure that you check clearance between your non-Gravitas nib and the inside of the cap. Not all JoWo produced nibs are identical; and you assume the risk for nib damage due to lack of internal clearance.
Would definitely buy again.

X
Xavier Elwell

Gravitas - Sentry Alu-Bronze

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© 2026 Pen Venture - Passion Virtuous,

Review picture
Isaac Leong
My wonderful first Titan pen

Beautiful colour. The nib is smooth and wet. The grip section is textured, I will not worry about writing with it in hot weather. This is my first demonstrator pen, I love watching the ink level drops (very slowly) in the barrel. The package is packed very securely. Thank you staffs at Pen Venture.

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Richard L Sherman
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Amazing Pen! Gravitas makes one of the best piston fillers out there. I dont keep the nib and normally use the pen for coustom flex nibs with Jowo #6 compatible nib units. So, i really cant speak on the nib. However, this pen is just built with high quality components. The weight, feel, and overall aesthetics are unmatched. You wont find better at this price point.

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I recently acquired the Platinum Maki-e Sansui pen in a Medium nib. The Pen Venture team was kind enough to carefully inspect and tune this pen before sending it on to me. Many thanks for that. It writes very smoothly and with a steady flow of ink. The Medium nib is my favorite nib configuration from the Platinum brand. The line width is nice and thin and always writes consistently right of the box. This lovely Maki-e pen was no different. I highly recommend it.

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The extra fine nib came tuned to perfection—a joy to write with. Thank you Emy!

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Gravitas - Vac 2.0 Aluminium | Black
Jimmie
FANTASTIC!

The VAC 2.0 is a great improvement to an already great pen (the original VAC Ultem). The weight and balance are spot on. The cap and the new threads engage without hesitation. No missed closures and the cap has a nice stop when threading back on. It posts securely without issue. Filling with the Kraken system is easy. I got a medium nib and it is smoooooooth. Mine is on par with my 823 medium nib The smoothness, wetness and bounce would make you think it's a gold nib. Line width is slightly narrower than the 823 medium. The pen feels solid and well built. I'm not worried about this one getting knocked around. Overall a great pen. Shipping from Pen-Venture to Colorado was five days! Great pen and service all around!

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