[. . . ] You have just acquired the PLC250 mini desktop calculator with profit feature from Lexibook®. This calculator will allow you to perform standard calculations as well as advanced functions such as percentage, memory, Tax calculation and quick profit analysis. [. . . ] Tax calculations In order to fix the tax rate, press the "%/TAX RATE" key for 3 seconds, the default tax rate (5%) will be displayed, then the calculator will display zero. You will be then able to enter the new tax rate and confirm it by pressing again on "%/TAX RATE". Profit analysis To calculate the margin Purchase price: 10 Sale price: 15 To calculate the sale price Purchase price: 175000 Margin: 15% To calculate the purchase price Sale price: 35000 Margin: 15% The "G"T key The "GT" key allows you to calculate the result of several calculations. Every time you press the "=" key, the result is displayed and "GT" is shown on the right of the screen. In order to delete the error message and any other calculations, press " ON/C ". Handling precautions Your calculator contains precision components, never attempt to take it apart. Take care not to drop your calculator or allow it to receive any other impacts. Do not leave your equipment in areas exposed to dampness, dirt, dust or high temperatures. Make sure your calculator does not come in contact with water or with any other liquid substance; this could produce a short circuit or a potential risk of fire. Wipe it with a dry, soft cloth, or with a cloth moistened with a solution of water and a neutral detergent. Under no circumstances will the manufacturer and its suppliers be liable to you or any third party for any damages, expenses, lost of profits, lost of earnings, or any other damages arising from any malfunction, repair, or battery replacement. The user should anticipate copies of physical records and data in order to be protected against any possible loss. Never dispose of batteries, the liquid crystal panel, or other component in a fire. Should the calculator be exposed to a high electrostatic discharge, the content of the memory could suffer damage or the keys could stop working. [. . . ] Customer Service: For technical assistance call our freephone helpline: 0808 100 3015 Lexibook UK Limited Unit 10 Petersfield Industrial Estate Bedford Road, Petersfield Hampshire, GU32 3QA United Kingdom Web: http://www. No part of this manual may be reproduced in any form without the express written consent of the manufacturer. [. . . ]