VINTAGE #T---BOXED IN ORIGINAL BOX A RARE VINTAGE MEASURING GAUGE FOR THE HEIGHT OF BALANCE STAFF, OR CYLINDER TUBE OR  PINION HEIGHT / LENGTH ETC AND BETWEEN PLATES ARBOR LENGTH AND WHEELS FOR POCKET WATCH REPAIR. THE FIRST PHOTOGRAPHS AT THE END ARE FROM HOROLOGICAL SHOP TOOLS 1700-1900 BY THEODORE R. CROM 1980 EDITION PAGE 483 PLATE 949 OF VARIOUS TOOL FOR HEIGHT MEASUREMENT. THE ENDING PHOTOGRAPHS ARE FROM THE SAME BOOK SAME EDITION 1980 PAGE 450 PLATE 897 OF THIS TOOL IN PARTICULAR IN AN IMPROVED VERSION, SLIGHTLY DIFFERENT EARLIER MODEL CALLED HALVER'S  CYLINDER HEIGHT GAUGE. CYLINDER WATCHES WERE STANDARD WORK FOR A WATCHMAKER IN THE 18TH AND 19TH CENTURIES.