This part of SAE J968 specifies two types of calibrating nozzle and holder assemblies intended for the testing and setting of diesel injection pumps on test benches.

It applies to:

a. A calibrating nozzle and holder assembly with a single hole orifice plate;
b. A calibrating nozzle and holder assembly with a delay pintle type nozzle.

The approximate range of the calibrating nozzle and holder assembly is up to:

a. 300 mm³/stroke with the single hole orifice plate;
b. 150 mm³/stroke with the delay pintle type nozzle.

Setting and maintenance requirements are specified in ISO 4008/3.