. Nova praxis construendi circinum proportionalem horographicum : eoque ritè confecto omnis generis horologia in planis regularibus et declinantibus expeditissimè et exactissimè delineandi, in proximi commodum typis proposita & figuris instructa . remotum a Tropico jfb in li-nea Meridiana C D, nimirum ad radium Solis in ££, & ±. pofiti, & movendo re-gulam de femihoraadfemihoram in yE<juinocl:iaIi,notandoque pundis, ubi eademregula fuperius tangitlineas horarias. Er ira fuperiiis invenies femiarcum pro Sig-nis H, & £7. Si fuperius ad puncfrum H, & $ regulam appiicueris , & de fpmuhoraadfemih
. Nova praxis construendi circinum proportionalem horographicum : eoque ritè confecto omnis generis horologia in planis regularibus et declinantibus expeditissimè et exactissimè delineandi, in proximi commodum typis proposita & figuris instructa . remotum a Tropico jfb in li-nea Meridiana C D, nimirum ad radium Solis in ££, & ±. pofiti, & movendo re-gulam de femihoraadfemihoram in yE<juinocl:iaIi,notandoque pundis, ubi eademregula fuperius tangitlineas horarias. Er ira fuperiiis invenies femiarcum pro Sig-nis H, & £7. Si fuperius ad puncfrum H, & $ regulam appiicueris , & de fpmuhoraadfemihoram in JiquinoCtiali ,ut diclum eft, procefleris, invenies inferiusin lineis horarum pun&a pro arcu ^, & ^.. Idem obfervandum eft pro arcubusinveniendis Signorum )?{, & ltt,ac V-, & X\\• Omniapundanotata lineis arcua-libus contrahe, ut figura exhibet. Oclavo : SignahuicHorologio Horizontali ita infcribuntur, ut Borealia^ponanturfupralineam/EquinoCtialem OP. Signa vero Auftralia infra eandem.,lineaiTL,. Horologio VerticaliSigna Zodiaci eodem modo infcribuntur, diverfirar*folum inhoc eft, quod Signa Borealia ponantur infra lineam y£qumodiaIem O vero fupra eandem Iineam_. Notan- Notandum praeterea Primo: Quod in his horologijs , quibus infcribuntun-SignaZodiaci, ftylus debeat efie determinatadongitudims, quaelonoitudo inve-nitur, fi ex pundo E, nimirum apice ftyli demittatur perpendicularis ad i z , qualem longitudinem exhibet fig. 16. in Iinea E D. Notandum fecundo: Siinhorologioinfcriptacfunt Iineae femihorarum, utillasterminesmodopraedido , notari debent in^Equinodialipuncla quadrantumhorarum, &procedioportet modofimili, quo antediximus de femihora ad fe-niihoram , ita hic de quadrante ad quadrantem_,. PROBLEMA XXI. Zodiacum radtofum Circino Proportionali infcribere adformandaSignaZodiaci in Horologio Horizontali, tfrerticali. COnftrudo Circino Proportionali, cujus unam faciem exhibet fig. 17. & alte- * *§^ramfig. 18. infcribe Sing
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Keywords: ., booka, bookdecade1690, bookidnovapraxisconstr00sahe, bookyear1695
