In 1731 Hadley showed his new quadrant to the Royal Society and published a description in his paper Description of a new instrument for taking angles which appeared in the Philosophical Transactions of the Royal Society. Hadley wrote in the paper:
Sa 1731 Hadley ay nagpakita ng kanyang bagong kuwadrante sa Royal Society at nai-publish ng isang paglalarawan sa kanyang papel Paglalarawan ng isang bagong instrumento para sa pagkuha angles na lumitaw sa pilosopiko Transaksyon ng Royal Society. Hadley wrote sa papel: