The word "Stadtler" is commonly spelled with two different variations. In American English, it is spelled as "Stadler" with a long "a" sound. However, in German, the original language of the word, it is spelled as "Stadtler" with a short "a" sound. The correct pronunciation of the German spelling is /ˈʃtætlɐ/. It is important to note the difference in spelling and pronunciation when using this word to maintain accuracy and clarity in communication.