随着科技的发展,杆秤的使用越来越少,在菜市场的角落里偶尔还能看见老一辈用杆秤称菜卖,不过杆秤上雪花状的白点怎么看呢?
工具/原料
杆秤
方法/步骤
下面是笔者在家中找到的一把常用杆秤,其最大量程为20斤,秤杆的杆身上有两排刻度,靠称钩一端有两个提绳,秤砣重1斤。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a1ec08fa513d2697f0ed41f058fbb2fb4316d865?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/c83d70cf3bc79f3dc106aa9db7a1cd11738b29b3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
我们都知道杆秤利用的是杆杠原理,离称钩近的提绳能称质量更大的物体,靠左边一点的提绳量程较小。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9213b07eca806538ec0eeabe9adda144ac3482b3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
下图为小提绳的量程,最大为5斤。1与2之间分10小格,所以最小单位是1两。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b58f8c5494eef01f379f5668edfe9925bd317d97?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
下图为大提绳的量程,最大为20斤,5与10之间分10小格,所以最小单位5两
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/8d5494eef01f3a2923439b639425bc315d607c97?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5
看懂这些,就和尺子上刻度的道理一样了,赶紧试试吧。不要被老一辈的说道:年轻人秤都不会看咯!