Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua .
Quadrans Apiani is a 1532 astronomical instrument treatise printed at Ingolstadt by Peter Apian, a mathematician, for surveyors and astronomers. Its woodcuts show measuring devices and sightlines: a surveyor sighting across a landscape to a town, a dial-shaped quadrant with a zodiac ring, and figures using a crossbow-like sight to measure towers at a distance, with clean geometric lines a designer might borrow for diagrams.
![Picture 1 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 3](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-3-0.webp)
![Picture 2 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 4](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-4-0.webp)
![Picture 3 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 16](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-16-0.webp)
![Picture 4 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 16](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-16-1.webp)
![Picture 5 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 19](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-19-0.webp)
![Picture 6 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 19](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-19-1.webp)
![Picture 7 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 21](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-21-0.webp)
![Picture 8 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 21](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-21-1.webp)
![Picture 9 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 22](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-22-0.webp)
![Picture 10 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 25](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-25-0.webp)
![Picture 11 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 30](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-30-0.webp)
![Picture 12 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 31](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-31-0.webp)
![Picture 13 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 32](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-32-0.webp)
![Picture 14 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 34](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-34-0.webp)
![Picture 15 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 36](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-36-0.webp)
![Picture 16 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 37](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-37-0.webp)
![Picture 17 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 37](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-37-1.webp)
![Picture 18 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 38](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-38-0.webp)
![Picture 19 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 44](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-44-0.webp)
![Picture 20 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 45](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-45-0.webp)
![Picture 21 of 21 from Quadrans Apiani astronomicus et iam recens inuentus et nunc primum editus. : Huic adiuncta sunt [et] alia intrumenta obseruatoria perinde noua . (1532), leaf 53](https://img.insideoutlibrary.com/img/200/ia-quadransapianias00apia-53-0.webp)