This paper describes the development of a scale to measure technology acceptance in smart agriculture. The scale is intended for use in diverse situations, ranging for the evaluation of existing technologies already in widespread use, to the evaluation of prototype systems. A systematic screening of prior literature was conducted to identify initial scale items regarding how technology acceptance is currently understood and measured. These items were iteratively reviewed and systematically categorised to develop the final scale proposed in this paper. In future work, this scale will be validated through user studies. The purpose of this paper is to make the initial scale available to the research community with a view to initial use and further evaluation.