avrul
pen for pilots
Briefing
Instructions for use
First, switch it on. In order to make an accurate measurements, the pen’s tip needs to be extended!
First, switch it on. In order to make an accurate measurements, the pen’s tip needs to be extended!

Then, place the AVRUL on a “half mil” (1:500000) aeronautical chart and read the distance in nautical miles from the tip of the pen along the blue stripe.

Now, simply read what you have measured. Note your distance measurement with your thumb and align it with the ground speed you are flying with. This is going to be your flight time in minutes.

Slide the clip around if it obstructs your readings.

AVRUL
Pen for PilotsWith the AViator’s RULer Pen navigation has never been easier! Measure distance and flight time directly on your chart.
Briefing
Instructions for use
Debriefing
What other pilots say
Mine just arrived today from Kickstarter and was showing it to a friend, and the cheek nicked it! Just said: “Oh, that’s cool! I am keeping it…! Anyways, I ordered another pair, happy days.
SimonIt is so much easier and quicker to use than the fiddly flight computer. Passed my skills test with flying colours. Thank you!
Ava SimpsonVery simple and it works! Nowadays pilots are over-reliant on complex technology that breaks. You always use a pen when flying. Avrul gives you one more trick in the sleeve.
Philip StrongIt is such a great idea. Absolutely love it! I recommend it to all student pilots. It is a must have for dead reckoning navigation and diversions.
TallenStory
More about AVRUL
Back in 2015 a student pilot was preparing for his PPL Skills Test. Needless to say he was very nervous about the exam. Especially about the navigation part when you are required to divert from your pre-planned route. And can you blame him? It is frustrating enough to fly an aeroplane with an examiner sat next to you. On the top of that being rubbish at doing maths in your head does not help at all.
What it did help, was to put marks on the pencil every 5 nautical miles and pre-calculate the flight times at different speeds on a separate piece of paper.
It worked! He passed the Skills Test. Then, a lightbulb moment. Can this piece of paper be wrapped around the barrel of a pen? You use one anyways when flying, why not be able to use it as a navigation aid too?
This marked the beginning of the “4P Pen” Project on KICKSTARTER. Yes, we know that “4P Pen” is a dull name, but you got to give him that he was not the brightest. After all he couldn’t tell you how long will take him to fly 23 miles at 110 knots… The name AVRUL comes from Aviation Ruler. It was given by the Legend and gentleman Captain Tom Rule. Many thanks Sir!
From struggles in maths, pencil and piece of paper, the AVRUL idea became reality thanks to the great help from many fellow pilots around the world who chipped in to fund the project on Kickstarter. To say thank you, we would like to offer you the opportunity to become an affiliate and have a share of the profit we make from your referrals.
Join Us
Become an Affiliate
AVRUL was created with the idea to benefit everybody in the flying community.
Are you a Flight Instructor? Make a recommendation to your students. With your Coupon Code they will get 20% discount, and you will receive a quarter (25%) of their purchase.
Aviation Blogger? Or an enthusiast who just wants to help and earn some extra £££?
Join the AVRUL Squadron and spread the good word among the fellow airmen.
or

25% Revenue share
We’ll share 25% of the revenue we earn from customers you refer to us. Tracking is automatic. Once you’ve signed up you’ll be provided with a URL and a Coupon Code that identifies your referrals. Simply place this link or the Coupon Code in your website or emails (but no spam! – see conditions) and start earning.

See your earnings real-time
By logging into your affiliate control panel, you’ll have access to past earnings as well as current earnings and number of referrals in real-time.

Regular payments
Referral earnings are paid each month via PayPal when your balance is £10 or more. If your balance is less than £10 we’ll automatically carry it forward.