Abstract: A locking device to arrest a displaceable member such as a door or window. The device comprises a stop member having a bottom wall and an angulated abutment wall extending thereabove. The abutment wall is inclined rearwardly from an end of the bottom wall. A fastener member is provided and has an adhesive to secure it to a substantially flat surface. A sliding connector is formed between the stop member and fastener member to removably interconnect them together.