International Standard Music Number 3 left to right. These weighted digits are added together. The check digit is the integer between 0 and 9 that makes the sum a multiple of 10. For instance, for the item with ISMN beginning 979-0-060-11561: As 85 mod 10 = 5, the check digit is 10 - 5 = 5 and the full number is 979-0-060-11561-5. For another example, Robert Fripp's collection of Guitar Craft scores has the ISMN 979-0-9016791-7-7. Given first 12 digits 979-0-9016791-7, the ISMN algorithm evaluates which implies that the check digit is indeed 7 (because 123+7=130=13x10). International Standard Music Number The International Standard Music
Slingsby Dart Dart 17. The first Dart 17 used an undercarriage with a less extended wheel, fitted in a fairing but almost all later ones were fitted with a retracting undercarriage. The later Dart 15s used a similar metal and wood spar and had the root fillet, producing a net weight saving of 45 lb (21 kg) and a corresponding improvement in sink rate. Most Dart 15s retained the fixed wheel undercarriage to allow them to compete as Standard Class. Darts with retractable gear gained an R in their designation, e.g. 17R. The 1965 World Championships saw only modest success for the