Hi,
I have many years experience producing PC based test equipment and interfacing to various sensors, so I'm confident I can deliver the updated test jig to our agreed specifications.
This project is similar to an 'Insufflator' (Inflates abdomen during key hole surgery operations) that I designed about 20 years ago.
From reading your outline requirements, I suggest this project should be broken down into several stages to ensure the final delivery meets your expectations. We can agree details when we meet.
My initial thoughts is to re-design the test jig to use a USB interface, other options are available.
I live in South West London, therefore visiting you in South Northants will not be a problem.
Best Regards
Mike