ChiCom North Vietnamese Artillery Mortar Compass Copy of US M2 with Case

Nice ChiCom copy of the US M2 Compass graduated in 3600 Mils rather than degrees. This is necessary when laying in more accurate indirect fire.   I have only seen one of these.  Well marked leather case.   Great for display with your 82mm or 120mm Mortar, 122mm Katyusha Rocket etc. Carried by forward observers and indirect fire crewmen, field engineers and those who needed more precise measurements.