Talk:John Arnold (watchmaker)

Revolution in Precision Timekeeping
The reference to "thirteen months" from February one year to July the next is clearly wrong, but I don't know what is correct. Dawright12 (talk) 12:29, 19 April 2011 (UTC)

Re: "At the time, the only oil available was vegetable in origin and degraded fairly quickly compared to modern lubricants." Surely whale oil was then in use, wasn't it? Dawright12 (talk) 12:40, 19 April 2011 (UTC)