| 摘要 |
<p>Ruler with one or more displaceable measuring memories, whence the ruler (1; 25; 2, 5, 26) consists of oblong bottom part means (2; 2, 2a) and thereover oblong upper part means (3a, b; 3a, b, c; 3c) and therebetween in the short sides, short insert means (4a, b; 4a, b, c, d; 4c, d), which are joined with these, and that between said bottom part means (2; 2, 2a) and said upper part means (3a, b; 3a, b, c; 3c) has been arranged longitudinal insert means (5, 6; 5), whereby one or more overbuilt rooms (10; 10, 27; 27) are formed in the ruler (1; 25; 2, 5, 26). In the room (10; 27) or rooms (10, 27) is one or more measuring memories (13; 13, 32; 32), which can be reached, by means of their overbuilt displacement means (18; 18, 33; 33), through one or more longitudinal openings (11; 11, 31; 31) of the room or rooms (10; 10, 27; 27), for displacement in the room (10; 27) or rooms (10, 27) along one or more paths (12; 12, 30; 30) of the room or rooms (10; 10, 27; 27). One can thereby drag the hand over the upside of the ruler (1; 25; 2, 5, 26), when ruling, without that the overbuilt and enclosed measuring memory (13; 32) or measuring memories (13, 32) are moved unintentionally.</p> |
