וַיַּעַשׂ֩ ל֨וֹ אֵה֜וּד חֶ֗רֶב וְלָ֛הּ שְׁנֵ֥י פֵי֖וֹת גֹּ֣מֶד אָרְכָּ֑הּ וַיַּחְגֹּ֤ר אוֹתָהּ֙ מִתַּ֣חַת לְמַדָּ֔יו עַ֖ל יֶ֥רֶךְ יְמִינֽוֹ׃
At gumawa si Ehud para sa kanyang sarili ng isang tabak na may dalawang talim, na isang siko ang haba; at ibinigkis niya ito sa ilalim ng kanyang kasuotan, sa kanyang kanang hita.
Rashi
One gomed long. An abridged amoh.5The length of the forearm. (Rashbam to Bava Basra, 100:a). In German, 'daumen lang'. In old French, 'espan courte'.
Metzudat Zion
MOUTHS: The sharp side of the sword is called the mouth
Rashi
Over his right thigh. Since he was able to utilize his left hand, he would grasp it with the left hand.