Gamco, The L.S. Starrett Company: Mario Gabelli‘s Gamco Investors just disclosed it is increasing its position in The L.S. Starrett Company (NYSE:SCX) to almost 15% of the company. In the filing, Gamco disclosed holding an aggregate amount of 908,773 shares, versus 254,358 shares in its latest 13F. In an earlier filing, Gamco reported about increasing its position in Zep, Inc. to 18%.