Case for Beck's patent protractor
Mahogany case for Beck's patent protractor; brass; 13 3/16" x 4 1/2" x 1 5/8"
Beck's patent protractor; brass; in mahogany case 13 3/16" x 4 1/2" x 1 5/8"
Mahogany case for Beck's patent protractor; brass; 13 3/16" x 4 1/2" x 1 5/8"
Beck's patent protractor; brass, 13 3/16" x 4 1/2" x 1 5/8"