Linear measuring device

Linear measuring device comprising a rail (1) on which a slide (5) is adjustably arranged, a measuring jaw (4) on the rail (1) and a measuring jaw (6) on the slide (5), and the rail (1) including a holding member (9) having at least one handle hole (10) and the slide (5) being provided with a ring handle (20;

• 120), and wherein the slide (5) is equipped with a clamping means (29) acting on the rail (1), and the ring handle (20;
• 120) is connected with the clamping means (29) for operation of the latter, the ring handle (20;
• 120) being adjustably arranged in a housing (14;
• 114), the clamping means (29) having a clamping piece (30;
• 130) supported between the housing (14;
• 114) and the ring handle (20;
• 120) and extending at least in part around the rail (1), the clamping piece (30;
• 130) being swingable relative to the ring handle (20;
• 120) and relative to the housing (14;
• 114) and relative to the slide (5) and relative to the rail (1) between a first position in which the clamping piece (30;
• 130) slides freely along the rail (1) and a second position in which the clamping piece (30;
• 130) grips the rail (1) to prevent sliding movement of the clamping piece (30;
• 130) on the rail (1), spring means (32;
• 132, 39) maintaining said clamping piece (30;
• 130) in said first position when the slide (5) and the ring handle (20;
• 120) move together as a unit toward the holding member (9), the ring handle (20;
• 120) being movable toward the holding member (9) relative to the slide (5) when movement of the slide (5) toward the holding member (9) is prevented by an object disposed between said measuring jaws (4, 6), and means carried by said ring handle (20;
• 120) to move said clamping piece (30;
• 130) to said second position upon said movement of said ring handle (20;
• 120) relative to the slide (5).