A large nickel silver scale rule by'Thomas Jones, 62 Charring Cross, London'. It measures 28.5 long and has bevelled edges. One edge is divided in inches, subdivded to 1/10th inch and further to 50th of an inch.I don't know what the other scale represents. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "marl727" and is located in this country: GB. This item can be shipped to North, South, or Latin America, all countries in Europe, Australia.