Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N121LS9STEM10IN found under Thermometer Self Indicating by Weksler Glass Thermometer Corp. The National Stock Number assigned to this part is 6685002917856, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N121LS9STEM10IN.