| # | Entity | Status | State |
|---|---|---|---|
| 1 | 16 006 321 428 H. & J. INSTRUMENTS PTY. LIMITED |
ABN Cancelled | VIC 3749 |
| 2 | 74 003 948 016 H. HEUER INSTRUMENTS PTY. LIMITED |
ABN Active | NSW 2118 |
| 3 | 75 120 123 539 The Trustee for H HEUER INSTRUMENTS SUPERANNUATION FUND |
ABN Active | NSW 2118 |
| 4 | 20 032 952 437 HANS WEISS H R OPTICAL INSTRUMENT SERVICES |
ABN Cancelled | VIC 3174 |
| 5 | 65 826 370 287 P & T LITTLEWOOD H LITTLEWOOD INSTRUMENT REPAIRS |
ABN Cancelled | NSW 2318 |
| 6 | 86 803 703 941 REAN HUMAN R H INSTRUMENTATION |
ABN Active | QLD 4556 |