Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 412.2 WITH POST BACK found under Indicator Dial by B C Ames Incorporated. The National Stock Number assigned to this part is 5210011451402, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 412.2 WITH POST BACK.