Bramer (Benjamin) Beschreibunge und Underricht wie allerley Theylungen zu den Mathematischen Instrumenten zu verfertigen: neben dem Gebrauch eines newen Proportional Instruments in zweyen Theylen verfasset , first edition, Marburg, Paul Egenolff, 1615.

Bramer (Benjamin) Beschreibunge und Underricht wie allerley Theylungen zu den Mathematischen Instrumenten zu verfertigen: neben dem Gebrauch eines newen Proportional Instruments in zweyen Theylen verfasset, first edition, title within decorative woodcut border, woodcut initials, head- and tail-pieces and diagrams, 2 folding woodcut plates (both with short tears), browning, heavy in places, modern calf-backed boards, [Tomash & Williams Add 9; VD17 39:121571A], small 4to, Marburg, Paul Egenolff, 1615.

⁂ Rare first edition of Bramer's important treatise on the construction and usage of a sector or proportional compass in which he cites Galileo (who had published his Le operazioni del compasso geometrico in 1606) , we can trace only 1 other copy at auction.