ðə tˈɑːmpsən lˌæ ɡˈɑːɹd tˈɛsts wɜːɹ ɐ sˈɪɹiz ʌv tˈɛsts kəndˈʌktᵻd ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹ tə dɪtˈɜːmɪn wˌɪtʃ kˈælɪbɚ ʃˌʊd biː jˈuːzd ɪn ɐmˈɛɹɪkən mˈɪlətˌɛɹi hˈændɡʌnz.
The Thompson–LaGarde Tests were a series of tests conducted in 1904 to determine which caliber should be used in American military handguns.