hˈɜːmən kˈæslɚ mˈɑːɹtʃ twˈɛlv, wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti sˈɛvən dʒuːlˈaɪ twˈɛnti, nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi nˈaɪn wʌz ɐn ɐmˈɛɹɪkən ɪnvˈɛntɚ ænd kˈoʊfˈaʊndɚɹ ʌvðə pˈɑːɹtnɚʃˌɪp kˈɔːld ðə kˈeɪ.ˈɛm.sˈiː.dˈiː. sˈɪndᵻkˌeɪt, ɐlˈɔŋ wɪð dˈʌbəljˌuː.kˈeɪˈɛl. dˈɪksən, ᵻlˈaɪəs kˈuːpmən, ænd hˈɛnɹi mˈɑːɹvɪn, wˌɪtʃ ᵻvˈɛntʃuːəli wʌz ɪŋkˈoːɹpɚɹˌeɪɾᵻd ˌɪntʊ ðɪ ɐmˈɛɹɪkən mjˈuːɾəskˌoʊp kˈʌmpəni ɪn dᵻsˈɛmbɚ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti fˈaɪv.
Herman Casler (March 12, 1867 – July 20, 1939) was an American inventor and co-founder of the partnership called the K.M.C.D. Syndicate, along with W.K-L. Dickson, Elias Koopman, and Henry Marvin, which eventually was incorporated into the American Mutoscope Company in December 1895.