A bolted joint simulation device for use in demonstrating the effects of varying conditions on a bolted joint, the device comprising: a bolt having a longitudinal axis comprising: a bolt first part having a head ; a bolt preload scale having bolt preload force value indicia , the bolt preload scale operable to display a simulated preload force on the bolt; a bolt second part having a top end , a bottom end , and threaded portion adjacent the bottom end, the bolt second part engaged with the bolt first part and axially moveable relative to the bolt first part along the longitudinal axis; and a biasing device connected to the bolt first part and the bolt second part, wherein on relative axial movement of the bolt first part and the bolt second part, the value of the preload force on the bolt displayed on the preload scale changes value; a compression member positioned between the bolt first part head and the bolt second part bottom end; a nut threadingly engaged with the bolt second part threaded portion, the nut operable to selectively generate the relative axial movement between the bolt first part and the bolt second part to simulate the bolt preload force and apply an axial force to the compression member along the longitudinal axis to simulate a clamp load on the compression member; a stand positioned in communication with the bolt between the compression member and the nut; and a weight selectively engaged with the stand operable to simulate a service load on the bolt. a bolt having a longitudinal axis comprising: a bolt first part having a head ; a bolt preload scale having bolt preload force value indicia , the bolt preload scale operable to display a simulated preload force on the bolt; a bolt second part having a top end , a bottom end , and threaded portion adjacent the bottom end, the bolt second part engaged with the bolt first part and axially moveable relative to the bolt first part along the longitudinal axis; and a biasing device connected to the bolt first part and the bolt second part, wherein on relative axial movement of the bolt first part and the bolt second part, the value of the preload force on the bolt displayed on the preload scale changes value; a bolt first part having a head ; a bolt preload scale having bolt preload force value indicia , the bolt preload scale operable to display a simulated preload force on the bolt; a bolt second part having a top end , a bottom end , and threaded portion adjacent the bottom end, the bolt second part engaged with the bolt first part and axially moveable relative to the bolt first part along the longitudinal axis; and a biasing device connected to the bolt first part and the bolt second part, wherein on relative axial movement of the bolt first part and the bolt second part, the value of the preload force on the bolt displayed on the preload scale changes value; a compression member positioned between the bolt first part head and the bolt second part bottom end; a nut threadingly engaged with the bolt second part threaded portion, the nut operable to selectively generate the relative axial movement between the bolt first part and the bolt second part to simulate the bolt preload force and apply an axial force to the compression member along the longitudinal axis to simulate a clamp load on the compression member; a stand positioned in communication with the bolt between the compression member and the nut; and a weight selectively engaged with the stand operable to simulate a service load on the bolt. <EOS>