This thin solar calculator for Pocket and Mini Filofax diary allows you to never be caught off guard.
If you need to make a calculation during a meeting or during a professional appointment, don't worry ! Take out your thin calculator slipped in your diary.
This calculator is also made with a ruler and conversion tables on its back (length, weight, volume of liquid and temperatures), and is made of very strong plastic and very little bulk.
This diary accessory is made by Filofax ! Filofax has been created in 1921, and is renowned for the quality of its products !