Carat (mass) Despite its being a non-metric unit, a number of metric countries have used this unit for its limited range of application. The Board of Trade carat was divisible into four "diamond grains", but measurements were typically made in multiples of carat. There were also two varieties of "refiners' carats" once used in the United Kingdom — the pound carat and the ounce carat. The pound troy was divisible into 24 "pound carats" of 240 grains troy each; the pound carat was divisible into four "pound grains" of 60 grains troy each; and the pound grain was divisible into four "pound
AMS-Flight Carat AMS-Flight Carat The AMS-Flight Carat A is a single-seat, high performance motorglider. The sailplane was originally designed and built by Technoflug in Germany and is now manufactured by AMS-Flight in Slovenia. The Carat was designed by Technoflug around the wings and horizontal tail of the Schempp-Hirth Discus sailplane, marrying these to a new fuselage, fin, undercarriage and engine.. Structurally the aircraft is a mixture of fibreglass and carbon fibre composites. The wings have PVC foam cores. In plan the wings have parallel chord inner panels and two outer sections of increasing straight taper. Winglets are an option. Schempp-Hirth type airbrakes