How can I do to make appear a value of a chosen record from another form (lookup field, single select) in a field of the current form?

How can I do to make appear a value of a chosen record from another form (lookup field, single select) in a field of the current form?

In my form ("sample_receiving"), I have a lookup displaying every sample types from the "sample_types" form. I can choose one. In the record of a sample type, there is two values (float) that i would to make appears in the "sample_receiving" form, after have chosen the sample type by the look up field.

How can I do?

Thank you.