细节
A 19th-Century boxwood brewer's proof rule,
with four sliders, stamped COOK. MAKER TO THE HON BOARD OF EXCISE LATE WELLINGTON CROWN COURT SOHO London No. 2096, with stamped numerals and finely engraved scales and further stamped J. JAMES -- 12in. (30.5cm.) long; a part dip rod; and a boxwood four-slide proof rule with stamped numerals and engraved scales, finely marked, each slider with scales to both surfaces, unsigned, circa 1830 -- 12½in. (31.7cm.) long
See Illustration (3)
with four sliders, stamped COOK. MAKER TO THE HON BOARD OF EXCISE LATE WELLINGTON CROWN COURT SOHO London No. 2096, with stamped numerals and finely engraved scales and further stamped J. JAMES -- 12in. (30.5cm.) long; a part dip rod; and a boxwood four-slide proof rule with stamped numerals and engraved scales, finely marked, each slider with scales to both surfaces, unsigned, circa 1830 -- 12½in. (31.7cm.) long
See Illustration (3)