The dissemination of the magnetic compass in the late Middle Ages and the demand for increasingly precise maps in the Renaissance drove the development of surveying instruments. Documents as early as the fifteenth century show the use of protractors fitted with magnetic needles for land surveying. These instruments were generally derived from the back of the astrolabe; in the following century, they were called polymeters, surveying magnetic compasses, theodolites, holometers, and graphometers. To this category, we can add the surveyor's square, which was more specifically designed, however, for plotting orthogonal alignments.
In the military sphere, the magnetic compass was also applied in the second half of the sixteenth century to a variety of instruments such as the radio latino, the archimetro, and the altazimuth square. A very popular instrument among seventeenth- and eighteenth-century surveyors was the plane table, which enabled them to simultaneously measure and draw the map of an area.
Inv. 3603
Francesco Morelli, Rome, 1788
Inv. 629
Maker unknown, 17th cent.
Inv. 656
Franz Schwartz, Brussels, first half 18th cent.
Inv. 683
Maker unknown, German, 16th cent.
Inv. 2538
Maker unknown, German, 16th cent.
Inv. 148
Maker unknown, Italian, 16th cent.
Inv. 2514
Antonio Bianchini, Italian, 1564
Inv. 2511
Antonio Bianchini, Italian, 16th cent.
Inv. 3629
F. Rousselot, Paris, 18th cent.
Inv. 121
Maker unknown, Italian?, 16th cent.
Inv. 2535
Christoph Schissler [attr.], German, late 16th cent.
Inv. 638, 3703
Maker unknown, Urbino, 1661
Inv. 151
Maker unknown, 17th cent.
Inv. 3630
"Ring", Berlin, 18th cent.
Inv. 245, 3699
Domenico Lusverg, Rome, 1710
Inv. 701
Domenico Lusverg, Rome, 1710
Inv. 3182
Maker unknown, German, 16th cent.
Inv. 694
Maker unknown, English, 16th cent.
Inv. 2510
Georg Zorn, Augsburg, 1618
Inv. 3182
David Usslaub, German, 1599
Inv. 617
Maker unknown, German, 16th cent.
Inv. 1279
Maker unknown, 17th cent.
Inv. 2506
Matteo Botti, Giovanbattista Botti, Italian, 17th cent.
Inv. 3371
Maker unknown, 17th cent.
Inv. 144
Baldassarre Lanci, Florence or Siena, 16th cent.
Inv. 1471
Maker unknown, Italian, 17th cent.
Inv. 3687
Urbino workshop, 16th cent.
Inv. 2527
Humphrey Cole, London, 1575
Inv. 1280
Maker unknown, 17th cent.
Inv. 2508
Maker unknown, Italian, 17th cent.
Inv. 152, 3165
Baldassarre Lanci, Italian, 1557
Inv. 691
Wentzel Jamnitzer, Nuremberg, ca. 1575
Inv. 643
Christoph Trechsler, German, 1572
Inv. 693
Maker unknown, German, 16th cent.
Inv. 2536, 2537
Maker unknown, German, 16th cent.
Inv. 680
Maker unknown, Urbino, 1654
Inv. 681
Domenico Lusverg, Rome, 1710
Inv. 149
Maker unknown, 17th cent.
Inv. 150
Michael Bumel, Nuremberg, 1625
Inv. 154
Erasmus Habermel, Prague, late 16th cent.
Inv. 2528
Maker unknown, English, late 16th cent.
Inv. 240
Augustine Ryther, English, 1590
Inv. 3164
Baldassarre Lanci [attr.], Florence, 16th cent.
Inv. 668
Paolo Massucci, Lucca, 1604