Hydrometer Cylinder (Stevenson-Reeves Trial Jar) For SR Hydrometer
This trial jar / hydrometer cylinder was designed for use with the Stevenson-Reeves hydrometer.
Unlike other trial jars, its diameter is just large enough so that surface tension effects do not interfere with your hydrometer reading.
And unlike plastic trial jars, its made of clear glass so its much easier to see through in order to read the hydrometer.
It is not graduated.