Armstrong Tool is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Jewelers Supplies & Findings

North American Industry Classification System (NAICS) Categories:

• Jewelry, Watch, Precious Stone, And Precious Metal Merchant Wholesalers > Jewelers Equipment & Supplies

Standard Industry Classification (SIC) Categories:

• Jewelry, Watches, Precious Stones, And Precious Metals > Jewelry & Precious Stones, Nec > Jewelers Supplies & Findings