Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1636-6MB2 found under Indicator Vertical Velocity by Carleton Technologies Inc. The National Stock Number assigned to this part is 6610001901428, and the Federal Supply Class is 6610 Flight Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1636-6MB2.