Vitruvius, M. Vitrvvivs Per Iocvndvm Solito Castigatior Factvs Cvm Figvris Et Tabvla Vt Iam Legi Et Intelligi Possit, 1511

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          <figure number="112">
            <description xml:id="echoid-description89" xml:space="preserve">Vmbræ gno
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            monis.
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            a. roma gno mo.ix. um-
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            bra. viii.
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            b. tarentum gnomo .xi.
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            umbra. ix.
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            c. athene gnomo. iiii.
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            umbra. iii.
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            d. rhodus gnomo. vii.
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            umbra. v.
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            e. alexandria gnomo. v.
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            umbra. iii.
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            poli
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            f. alexandria gr. xxxvi.
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            g. thodus gr. xxxvi.
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            h. athene gr. xxxvii. &
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            quartæ. i.
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            i. tarentum gr. xxxix. &
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            quartæ. iii.
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            K. roma xxxxii.
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            Gnomones
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            a. gnomo mæ.
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            b. athenarum
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            c. rhodi
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            d. tarenti
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            e. alexandrie
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            Quotiẽs me timur um-
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            bras reduci
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            mus gnomo
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            nes ubi eft. a.
              <lb/>
            & gnomo
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            romæ</description>
            <variables xml:id="echoid-variables84" xml:space="preserve">a b c d e f g h i k</variables>
          </figure>
          <p>
            <s xml:id="echoid-s3269" xml:space="preserve">Ita in quibuſcun locis horologia erunt deſcribenda, eo loci ſumen-
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            da eſt æquinoctialis vmbra, Et ſi erunt (quemadmodum romæ) gnomo
              <lb/>
            nis partes nouem, vmbræ octone, deſcribatur linea in planitia, & </s>
            <s xml:id="echoid-s3270" xml:space="preserve">ex me
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            dia πρὸςὸρθὰς erigatur vti ſit ad norman, quæ dicitur gnomon, & </s>
            <s xml:id="echoid-s3271" xml:space="preserve">a li-
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            nea quæ erit planities in finem gnomonis, circino nouem ſpacia dimeti
              <lb/>
            antur, & </s>
            <s xml:id="echoid-s3272" xml:space="preserve">quo loco nonæ partis ſignum fuerit, centrum conſtituatur, vbi
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            erit littera. </s>
            <s xml:id="echoid-s3273" xml:space="preserve">a. </s>
            <s xml:id="echoid-s3274" xml:space="preserve">& </s>
            <s xml:id="echoid-s3275" xml:space="preserve">diducto circino ab eo centro ad lineam planitiæ vbi erit
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            littera. </s>
            <s xml:id="echoid-s3276" xml:space="preserve">b. </s>
            <s xml:id="echoid-s3277" xml:space="preserve">circinatio circuli deſcribatur, quæ dicitur, meridiana, Deĩde ex
              <lb/>
            nouem partibus, quæ ſunt a planitia ad gnomonis centrum, octo ſumã
              <lb/>
            tur & </s>
            <s xml:id="echoid-s3278" xml:space="preserve">ſignentur in linea quæ eſt in planitia, ubi erit littera .</s>
            <s xml:id="echoid-s3279" xml:space="preserve">c. </s>
            <s xml:id="echoid-s3280" xml:space="preserve">Hæc autem
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            erit gnomonis æquinoctialis umbra, & </s>
            <s xml:id="echoid-s3281" xml:space="preserve">ab eo ſigno & </s>
            <s xml:id="echoid-s3282" xml:space="preserve">littera .</s>
            <s xml:id="echoid-s3283" xml:space="preserve">c. </s>
            <s xml:id="echoid-s3284" xml:space="preserve">per cẽtrũ
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            ubi eſt littera. </s>
            <s xml:id="echoid-s3285" xml:space="preserve">a. </s>
            <s xml:id="echoid-s3286" xml:space="preserve">linea perducatur, ubi erit ſolis æquinoctialis radius, Tũc
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            ab centto diducto circino ad lineã planitiæ æquilatatio ſignetur ubi erit
              <lb/>
            littera. </s>
            <s xml:id="echoid-s3287" xml:space="preserve">e. </s>
            <s xml:id="echoid-s3288" xml:space="preserve">ſiniſteriore parte, &</s>
            <s xml:id="echoid-s3289" xml:space="preserve">. i. </s>
            <s xml:id="echoid-s3290" xml:space="preserve">dexteriore in extremis lineis circinatio -
              <lb/>
            nis, & </s>
            <s xml:id="echoid-s3291" xml:space="preserve">per centrum perducenda linea, vt æqua duo hemicyclia ſint diui
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            ſa. </s>
            <s xml:id="echoid-s3292" xml:space="preserve">Hæc autem linea a mathematicis dicitur orizon. </s>
            <s xml:id="echoid-s3293" xml:space="preserve">Deinde circinationis
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            totius ſumenda pars eſt quintadecima & </s>
            <s xml:id="echoid-s3294" xml:space="preserve">circini centrum collocandum
              <lb/>
            ĩlinea circinatiõis, Quo loci ſecat eam lineam æquinoctialis radius, </s>
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