Details
A Zeppelin Tachometer
by Veigel, the dial with red and green sectors, graduated 300 - 3500 u/min No. 1093912 -- 6in. (15.3cm.) dia
by Veigel, the dial with red and green sectors, graduated 300 - 3500 u/min No. 1093912 -- 6in. (15.3cm.) dia