Agricola, Georg, De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ..., 1556

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        <body>
          <chap id="N10018">
            <p id="N11CAD" type="main">
              <s id="N11CDC">
                <pb pagenum="99" xlink:href="001/01/109.jpg"/>
              lus in terra defigitur: ad quem alter funiculus alligatus & affixus rectà duci­
                <lb/>
              tur in cuniculum uſque ad eum finem, dum nullum fundamenti uel tecti ue­
                <lb/>
              næ angulum attingat: poſtea à funiculo, ex inferiori tripode pendente, funi
                <lb/>
              culus tertius, item affixus rectà ſurſum uerſus per decliuem montis partem
                <lb/>
              ducitur uſque ad palum tripodis ſuperioris, atque ad eum alligatur et affigitur:
                <lb/>
              ut autem altitudinis dimenſio certior ſit, unum & idem latus funiculi, ex in­
                <lb/>
              feriori tripode pendentis, contingat tertius iſte funiculus, quod ſecundus,
                <lb/>
              in cuniculum ductus, contingit: his omnibus ritè factis menſor cùm iam fu­
                <lb/>
              niculus, rectà in cuniculum ductus, angulum ſiue fundamenti ſiue tecti ta­
                <lb/>
              cturus eſt, in ſolum cuniculi collocat aſſerem, & ſuper eum ſtatuit
                <expan abbr="orbẽ">orbem</expan>
              , uel
                <lb/>
                <expan abbr="inſtrumẽtum">inſtrumentum</expan>
              , quod indicem habet, ei peculiare: id circulis ceratis differt ab
                <lb/>
              altero, cui item index, libro tertio à nobis deſcripto. </s>
              <s id="N11D0B">Ad utrumque autem, tan
                <lb/>
              quam ad regulam & normam, decernit utrum funiculi extenti rectà
                <expan abbr="tendãt">tendant</expan>
                <lb/>
              ad extremam cuniculi partem, an modo rectà tendant, modo ad fundamen
                <lb/>
              tum uel tectum declinent: utrumque inſtrumentum in partes diuiſum eſt: ſed
                <lb/>
              quod habet indicem, quem regit magnes, in quatuor & uiginti: orbis uerò
                <lb/>
              in ſedecim. </s>
              <s id="N11D1C">Etenim primò in quatuor principales, quarum quæque rurſus in
                <lb/>
              quatuor: utrique ſunt circuli cerati, uerum ei, quod habet indicem, ſeptem: al­
                <lb/>
              teri, tantum quinque. </s>
              <s id="N11D23">Hos circulos ceratos menſor ſiue hoc ſiue illo utatur in
                <lb/>
              ſtrumento, pungit, ipſis punctis ordine notans partes, in quas funiculi di­
                <lb/>
              uerſis modis extenduntur. </s>
              <s id="N11D2A">Sed orbis præterea foramen habet ex eius exti­
                <lb/>
              ma parte circulari ad punctum uſque pertinens: in quod cochleam ferream,
                <lb/>
              ad quam ſecundum funiculum alligat, immittit & uerſando in aſſerem infi­
                <lb/>
              git: ut etiam orbis maneat immobilis. </s>
              <s id="N11D33">Ne uerò funiculus ſecundus & dein­
                <lb/>
              ceps alij extenti, de cochlea detrahantur, cauit ferro graui, in cuius foramine
                <lb/>
              cochleæ caput includit: at alterum
                <expan abbr="inſtrumentũ">inſtrumentum</expan>
              , cui index eſt, quia caret fo­
                <lb/>
              ramine, tantummodo ad cochleam apponit.</s>
            </p>
            <p id="N11D40" type="caption">
              <s id="N11D42">I
                <emph type="italics"/>
              nſtrumenti, cui index est, ſeptem circuli cerati
                <emph.end type="italics"/>
                <lb/>
              A B C D E F G,</s>
            </p>
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        </body>
      </text>
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