Mark Purdy, has been keeping time running for more than 20 years., Blackstone Manor Clock Repair consistently provides high quality service at a fair price. Some clock repair businesses restrict what they will do under warranty, but we continue to put our customers first with a friendly "old fashioned" warranty policy that will make you glad you came to us. We believe that a good referral from a happy customer is the best form of advertising. We take pride in the many positive comments written about us on websites that do consumer reviews of local businesses..