Yes! they are called Crooke's tubes ( Discharge Tubes )
They are beautiful, cleaned up they would be better than the one's you can buy today but it looks like 1 has been broken
If you have the old "Getting it to Work - Physics Equipment for High Schools" book, (put out by the STANSW and NSW Dept of Ed about 100 years ago), it describes these on page 29 as "Tubes for Vacuum Scale"
Yeah! Ian but the Quality of the gear puts anything they supply today in the shade
It's far better to repair that gear than buy new one's, but it looks like 1 of the tubes has been lost/broken Shame
Some time ago I bought a new set of tubes from Serrata. The stand itself was cheap chinese s--t. So I transferred the new tubes into the old stand, and voila, new piece of equipment, that has worked for years and borrowed each year by the catholic school in town.