enum Unit { kUnitUnknown = 0, kUnitMeter = 1, kUnitFoot = 2, kUnitInch = 3, kUnitIFoot = 4, kUnitClarkeFoot = 5, kUnitIInch = 6, kUnitCentimeter = 7, kUnitKilometer = 8, kUnitYard = 9, kUnitSearsYard = 10, kUnitMile = 11, kUnitIYard = 12, kUnitIMile = 13, kUnitKnot = 14, kUnitNautM = 15, kUnitLat66 = 16, kUnitLat83 = 17, kUnitDecimeter = 18, kUnitMillimeter = 19, kUnitDekameter = 20, kUnitHectometer = 21, kUnitGermanMeter = 22, kUnitCaGrid = 23, kUnitClarkeChain = 24, kUnitGunterChain = 25, kUnitBenoitChain = 26, kUnitSearsChain = 27, kUnitClarkeLink = 28, kUnitGunterLink = 29, kUnitBenoitLink = 30, kUnitSearsLink = 31, kUnitRod = 32, kUnitPerch = 33, kUnitPole = 34, kUnitFurlong = 35, kUnitRood = 36, kUnitCapeFoot = 37, kUnitBrealey = 38, kUnitSearsFoot = 39, kUnitGoldCoastFoot = 40, kUnitMicroInch = 41, kUnitIndianYard = 42, kUnitIndianFoot = 43, kUnitIndianFt37 = 44, kUnitIndianFt62 = 45, kUnitIndianFt75 = 46, kUnitIndianYd37 = 47, kUnitDecameter = 48, kUnitInternationalChain = 49, kUnitInternationalLink = 50, kUnitBrFootTrunc = 51, kUnitBrChainTrunc = 52, kUnitBrLinkTrunc = 53, kUnitDegree = 1001, kUnitGrad = 1002, kUnitGrade = 1003, kUnitMapInfo = 1004, kUnitMil = 1005, kUnitMinute = 1006, kUnitRadian = 1007, kUnitSecond = 1008, kUnitDecisec = 1009, kUnitCentisec = 1010, kUnitMillisec = 1011 };