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Post by kately on Oct 13, 2023 2:54:13 GMT -5
![](//storage.proboards.com/363101/thumbnailer/PJAlfMvZNucacRXSYdLw.png) ![](//storage.proboards.com/363101/thumbnailer/hzZdGaIFPnpMEB0ZpkCU.png) ![](//storage.proboards.com/363101/thumbnailer/ouUZcWHHCIkMMnHVmcuE.png) Function:to measure the earth’s rotational angular velocity and thus determine the true north position. www.ericcointernational.com/north-findersI make north seekers and can customize them, please email me if you have any questions. WhatsApp: 13630231561 E-mail:info@ericcointernational.com
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