Details
A MID 18TH-CENTURY BRASS PLATE,
ENGRAVED WITH A TABLE OF REDUCTION FOR LINKS, RODS AND PERCHES, INSCRIBED WITH LINES FOR RUM, NUM, SINE, TAN, SEC AND COR, SIGNED BENEATH THE TABLE OF REDUCTION MADE BY JAMES SAVAGE ANNO 1748, THE REVERSE WITH TABLE DIVIDED IN ENGLISH INCHES WITH SUB-DIVISIONS -- 6¼IN. (15.8CM.) LONG
SEE ILLUSTRATION
ENGRAVED WITH A TABLE OF REDUCTION FOR LINKS, RODS AND PERCHES, INSCRIBED WITH LINES FOR RUM, NUM, SINE, TAN, SEC AND COR, SIGNED BENEATH THE TABLE OF REDUCTION MADE BY JAMES SAVAGE ANNO 1748, THE REVERSE WITH TABLE DIVIDED IN ENGLISH INCHES WITH SUB-DIVISIONS -- 6¼IN. (15.8CM.) LONG
SEE ILLUSTRATION