45ml Measuring Cylinder. Mainly used to mixing small quantites of developer like Fomadon R09 (modern version of Rodinal.
The well-known Paterson graduates are made from transparent polystyrene moulded under strictly controlled conditions to ensure total accuracy. They are of a cylindrical laboratory design giving uniform widely separated markings which are very easy to read.
Resistant to most photographic chemicals; each calibrated in metric, Imperial and US scales; Accurate, easy to read markings.