Available in a variety of measurement ranges, the Ultima Transducer Holder is designed for use with the Bowers Ultima electronic bore gauge. is available with or without probes.
| PH2 | 2-6 | With Probe | POA |
| PH3 | 6-20 | With Probe | POA |
| PH4 | 20-100 | With Probe | POA |
| PH5 | 100-310 | With Probe | POA |
| PW2 | 2-6 | Without Probe | POA |
| PW3 | 6-20 | Without Probe | POA |
| PW4 | 20-100 | Without Probe PW5 | POA |
| PW5 | 100-310 | Without Probe | POA |