Pratt & Whitney, Brown & Sharpe 6″ Machinists Rule – Advertising Rulers – Tempered USA Made 2 pcs. – Pratt & Whitney 6″ Advertising Rulers No. C-21168 Tempered USA. – Brown & Sharpe 6″ Advertising Ruler No. 599-323-605 Tempered USA.
Pratt & Whitney, Brown & Sharpe 6″ Machinists Rule – Advertising Rulers – Tempered USA Made 2 pcs. – Pratt & Whitney 6″ Advertising Rulers No. C-21168 Tempered USA. – Brown & Sharpe 6″ Advertising Ruler No. 599-323-605 Tempered USA.