Designed for small quantities where holdup between flask and receiver must be minimized, but where it is also desired to measure vapor temperature with the accuracy of larger setups. Still body without vacuum jacket and vigreux indents. Upper hose connections are for water lines, lower connection for vacuum or vent. Former 7/12 thermometer joint has been redesigned as a larger, 10/18 joint to accommodate 8294 series non-mercury thermometers using 8299-10 adapter.