A manual dental laboratory instrument intended to be used in a dental laboratory during fabrication or revision of a final dental prosthesis (e.g., denture, crown, bridge) to integrate and/or adjust the fitting between male and female precision attachments. It is in the form of a handle with a distal end designed to perform a dedicated function (e.g., facilitate the parallel placement of a male attachment, remove/exchange/adjust an attachment, insert a retention insert, tighten a screwable element of an attachment); some types may be heated to enable melting, or attached to a motorized handpiece (e.g., drill). This is a reusable device.