• BHI Watch Servicing Exams

    There are 4 watch servicing exams that form part of the BHI examination portfolio; D4 : Quartz – 6 hours D15 : Manual Wind – 7 hours D16 : Automatic – 8 hours D20 : Chronograph – 16 hours In each case you will receive a watch or movement that has had a certain number …

  • BHI Practical Exam: Cock and Plate (Part 2)

    This is the second part describing the process to create the Cock and Plate assembly. You can see the 1st part here. The first part seemed to have gone well. Perhaps it wouldn’t be wrong to say it went at least 80% as well as I could have hoped. By far the biggest problem I …

  • BHI Practical Exam: Cock and Plate (Part 1)

    The 2nd year of the British Horological Institute (BHI) exams includes a practical exam where the candidate must make a Cock and Plate assembly for a carriage clock. This article will be split over 3 parts that I hope to finish over the next few weeks. This first part will focus on the preparation prior …

  • How to Spot and Fix a Watch Battery Leak

    Watch batteries used in quartz watches, specifically Silver Oxide cells, often leak. (click here to learn more about watch batteries) The electrolyte used in a Silver Oxide watch battery is highly alkaline and corrosive and so when a battery leaks inside a watch it can be catastrophic for the movement. In a combined survey of …