| 001 | Input/Output Connectors on R.P |
| 010 | Left position 400 Hz high pass |
| 011 | Left position CCITT weighting |
| 012 | Left position CCIR weighting f |
| 013 | Left position C-Message weight |
| 014 | Left position CCIR/ARM weighti |
| 015 | Left position "A" weighting fi |
| 050 | Right position 400 Hz high pas |
| 051 | Right position CCITT weighting |
| 052 | Right position CCIR weighting |
| 053 | Right position C-Message weigh |
| 054 | Right position CCIR/ARM weight |
| 055 | Right position "A" weighting f |
| 907 | Front handle kit(5061-9689) |
| 908 | Rack Flange Kit for Use without Handles |
| 909 | Front Handle & Rack Flange Kit |
| 910 | Additional operating and service manual |
| 915 | Additional Service Manual |
| UK6 | Commercial calibration with test results data |