The markings are widely separated and are easy to read. They are resistant to most photographic chemicals.
Five sizes are available each calibrated in metric, Imperial and US scales.
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; Five sizes, each calibrated in metric, Imperial and US scales; Accurate, easy to read markings.
