| 摘要 |
<p>1288996 Altimeter indicating elements KOLLSMAN INSTRUMENT CORP 3 Nov 1970 [3 Nov 1969] 52277/70 Heading G1J An altimeter comprises a scale 13 over which a double ended pointer 16 moves to indicate the final two digits of the height in meters. A mask 19 permits only one end of the pointer to be seen at once except at the ends of the scale when both are visible.</p> |
