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ATTENTION CUSTOMERS: Our phone system is currently down. Please contact us at

USI welcomes all communications from those interested in our products and services. Feel free to either call or fill out a contact form below so that one of our representatives can follow up with you. When filling out a contact form, please fill out every field. We look forward to hearing from you!

Main Phone: 317-842-9000
Sales Phone: 973-209-6300
Fax Number: 317-849-7600

8431 Castlewood Drive Indianapolis, IN 46250


Under normal conditions, allow 40 minutes from the airport (indicated by the bold A in the blue box) located on the west side of the city to our facility (indicated by the circled star) located in the northeast corner of Indianapolis. Take I-465 North, then I-465 East to I-69 North. From I-69 North take Exit 1 at 82nd St. Turn right (west) on 82nd St.., the second light is Bash St., turn right (north) onto Bash St. and follow it past the Red Roof Inn, to Castlewood Dr. and turn right, follow the road as it curves left, our one story brown brick building is the first building on the right after curve. In front, there is a sign "Magnetic Instrumentation, Inc.". Visitor parking is located in the second parking lot.


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