Priced and illustrated catalogue of mathematical instruments...Swiss drawing instruments, transits, levels.. (1867)
McAllister, William Y · Philadelphia PA · leaf 31
32 MATHEMATICAL INSTRUMENTS. Combination ($lpomdfr Jule. … 3443. No. Price. 3443. Combination Clynomcter Rule; being the very best form of Slope Level yet invented. It combines within itself—Slope Level for Miners, Carpenters' Rule, Spirit Level, Square, Plumb, Bevel Indicator, Brace Scale, Draughting Scale of equal parts, T Square, Protractor Right Angle…
Mathematical instruments
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
