kˈæslɚ wʌz ɐsˈoʊsɪˌeɪɾᵻd wɪð bˈaɪəɡɹˌæf ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd twˈɛnti wˈʌn ɪnðə dɪzˈaɪn ænd mˌænjuːfˈæktʃɚɹ ʌv mˈoʊʃən pˈɪktʃɚ kˈæmɹəz, pɹədʒˈɛktɚz, ˌɔːɾəmˈæɾɪk pɹˈɪntɪŋ məʃˈiːnz, ænd ˈʌðɚ spˈɛʃəl məʃˈiːnz ɐsˈoʊsɪˌeɪɾᵻd wɪððə pɹədˈʌkʃən ʌv mˈoʊʃən pˈɪktʃɚz.
Casler was associated with Biograph until 1921 in the design and manufacture of motion picture cameras, projectors, automatic printing machines, and other special machines associated with the production of motion pictures.