At first, I didn’t realize the the disk on the left was being used to hold down tubes in the thermal block. I thought you might load the tubes into it and then

At first, I didn’t realize the the disk on the left was being used to hold down tubes in the thermal block. I thought you might load the tubes into it and then it would turn to put tubes in smaller blocks that were at different temperatures. If it did this, then that would be the ultimate throwback to when we would actually move tubes between water baths/heat blocks to manually “cycle” the tubes.