This dataset is the result of a study into the acquisition of spatial devices in two learners of Sign Language of the Netherlands (NGT). This study is one of the four studies carried out by Eveline Boers-Visker in the context of her doctoral research entitled ‘Learning to use space: a study into the SL2 acquisition process of adult learners of Sign Language of the Netherlands’ (2016-2020). This particular study investigates the acquisition of agreement verbs in fourteen learners of NGT who were followed longitudinally. The data are visually represented in an Excel document, using a the system of ‘barcodes’ and top-view representations. An explanation on the Excel document is provided in English and Dutch.