Thanks for the reply.
Your points re. calibration do not apply in my case, as my device is entirely self-built and self programmed. I will definitely try to trim the buoyancy to achieve 25 degrees from vertical in clear water, though, for my next attempt.
2p coins won't fit in my tube, by the way!
And yes, I've always thought the important thing is to see when things stop changing. I have a hydrometer and an incerdibly-hard-to-read refractometer for more absolute measurements.
I would be interested in any photos, to try and gauge how high the thing should float.
Your points re. calibration do not apply in my case, as my device is entirely self-built and self programmed. I will definitely try to trim the buoyancy to achieve 25 degrees from vertical in clear water, though, for my next attempt.
2p coins won't fit in my tube, by the way!
And yes, I've always thought the important thing is to see when things stop changing. I have a hydrometer and an incerdibly-hard-to-read refractometer for more absolute measurements.
I would be interested in any photos, to try and gauge how high the thing should float.