Instrumentation Services in Harrow, Middlesex
| Name & Address | Phone # | Website |
| Circor Instrumentation Ltd 1-3 Bouverie Road, Harrow, Middlesex HA1 4HB | 020 84230113 |  |
| Switchgear & Instrumentation Ltd Mwb Business Exchange, Harrow, Middlesex HA1 2XU | 020 89014073 | |
