| AMPHENOL Series | Spectrol Series | NTE Series | Description |
| 1350 | 21-1-11 | 503-0006 | 1 13/16" Round, 15-Turn Vernier Dial |
| 1370 | 16-1-11 | 503-0004 | 7/8" Round, 15-Turn Vernier Dial |
| 1385, 3121-2,3 | 15-1-11 | 503-0001 | 1" Rectangular, 10-Turn Digital Dial |
| 2131B**, 2131S** | 533-1X-XXX | 502-0130 | 7/8" Dia., 3-Turn, Wirewound |
| 2151B**, 4101B**, (2161**, 2161S**) | 534-1X-XXX | 502-0100 | 7/8" Dia., 10-Turn, Wirewound |
| 2305P | 64P | 500-0170 | 3/8" Square, MT, Cermet, Side Adj |
| 2305W | 64W | 500-0192 | 3/8" Square, MT, Cermet, Top Adj |
| 2305X | 64X | 500-0215 | 3/8" Square, MT, Cermet, Side Adj |
| 2600P, 3800P Unsealed, 2610P | 43P | 500-0001 | 3/4" Rectangular, MT, Cermet |
| 993P, 995, 2851P 1 1/4" Length, 2855P | 70Y | 500-0390 | 1 1/4" Rectangular, MT, Cermet, Pins |