According to our records, this business is located at 546 S Pacific St. in San Marcos (in San Diego County), California 92078, the location GPS coordinates are: 33.1347639 (latitude), -117.198683 (longitude). Ly's Precision Machining is categorized under Machine Shops (SIC code 3599). Current estimates show that the unit has a sales volume of $615,000 and staff of approximately 5 people. You can contact the company by phone at (760) 744-6115.