TOKYO, Aug. 28 — An investigation into a Japanese manufacturer suspected of exporting sophisticated measuring devices to Libya’s former atomic weapons program has increasingly focused on whether the company also sold similar equipment to Iran, a government official said Monday. The police and regulators have broadened their investigation of the company, the Mitutoyo Corporation, a maker of precision instruments, as evidence has emerged that it may have also sold equipment to Iran for use in making centrifuges to enrich uranium, said an official in the Trade Ministry, which administers export restrictions. The official spoke on condition of anonymity because he...