AN UNEXPECTED DISCOVERY
Hello! I’m glad you came by. I wanted to show you something. Last weekend I went up into the attic to put away some papers, when I noticed this old wooden box behind a pile of National Geographics. I would have sworn that I’d never seen it before, but in fact it must have been there for ages, before we ever even moved in.
{CONT.}
A NOTE ON HEAVY CARD PAPER
The box was covered with thick dust when I found it. I brushed it off and carefully opened up the lid. Resting gently on top of its contents was an odd little note.
{CONT.}
INTREPID TRAVELLER, DO YOU find yourself befuddled by Strange and Mystifying units of measurement when you journey Abroad? When you enter the labyrynthine Arcades and Souks of distant Cities, are you Troubled by the notion that you may not know what you spend in your own coin? When entertaining new acquaintances (or those of long standing) in the charming Restaurants and Taverns you discover, do you often wish you could summon to mind both the Local Customs for Leaving Gratuities, and how much you owe in that Precise Moment, with the same Confidence and Alacrity you would demonstrate at home?
These Concerns and Discomforts are easily remedied by 3 Numbers, a Machine for Calculation. Simply make use of its Currency Converter, Units Converter, Tip Calculator, and Mathematical Calculator, which employ a Cunning System for the Storage of your Numbers for later Re-use and Re-calculation. You will find that you can ask much of this Tiny Contraption, including the ability to record the Details of your Expenditures and Calculations in a series of Notes which will be available to you not only when you are using 3 Numbers, but indeed, on any Apparatus equipped with a Programme for browsing this Interconnected Network with which Progress has seen fit to bless us.

Traveller: Confidence, Poise, and a Strong Profile are within your grasp! It is our distinct pleasure to congratulate you on your decision to purchase this Diminutive Technological Marvel.
BRASS, AND GREEN GLASS
Under the note was this remarkable machine. I found a soft cloth and sat down with it to see if I could give the brass a quick shine. To my amazement, it started up at my touch, gears whirring and clacking while the vacuum tubes hummed into life. It looks very useful!
{CONT.}

INSTRUCTIONS FOR USE
The only other thing in the box was this instruction sheet. You’re welcome to read it if you like.
{TOP}
Five Essential Instructions in the use of 3 Numbers:
  1. Just as the hat you wear may signal your mood, so it is with 3 Numbers. An Aesthetic which flies in the face of your Preferences is something up with which you must not put! Touch the Information Symbol (a letter ‘i’ enclosed in a circle) on the Currency Converter and choose either the brazen Navigator, or, for those times when you must travel undercover, Incognito.
  2. To Calculate, touch the Input Field of a Calculator, and enter numbers on the Mechanism which emerges. It is possible to: Convert Currency and the Units of Measurement, Calculate Gratuities and consult a Guide to the Gratuities Customs of the World, or solve Mathematical Problems.
  3. With nothing more than a Gesture, you can move the Numbers you have Obtained into the three Number Holders found at the top of the Machine. Conversely, you can move Numbers out of the Number Holders, and into different Calculators! Simply touch your finger down on the number, and then move your finger over the machine’s surface as if you were drawing a line to the desired destination. You will actually see a line Appear!
  4. To make a Record of an Expenditure or Calculation Result, touch the Notes button at the bottom of the Machine. There you will see a button entitled “Add”, which, when touched, will present you with a new note into which you can move your existing numbers, or enter a new number, and add Text of your choosing underneath. To collect these notes using another Machine furnished with a “Web Browser”, it is sufficient to touch the “Publish” button, at which time 3 Numbers will create a one-time Address to be entered on said Machine’s “Web Browser”, where the Notes can be Promptly Obtained.
  5. Three swift Shakes of the Whole Contraption will fully serve to wipe away any erroneous information you may have entered. It will be as if it never occurred! Any numbers in the Number Holders will be left intact.


3 Numbers is a traveler’s multitool for the iPhone with 6 different utilities, imported for you from a golden age of adventurous journeys.

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On your next business trip or vacation: currency conversion, unit conversion, tip calculation, tipping customs and expense tracking are one touch away.

Watch the 3 Numbers movie to see exactly what it does and how it works.


  • Drag and drop numbers between calculators with a gesture
  • Keep numbers between sessions
  • Convert currency [view currencies]
  • Convert measurement units
  • Calculate tips
  • Check a highly-condensed tipping guide
  • Use a calculator
  • Track expenses or anything else with the notes utility
  • Publish your notes and collect them on any computer with a web browser
  • 3 Numbers has a striking steampunk interface and an alternative look which is entirely modern - it is your choice, and your numbers and settings will still be there either way.