single tender enquiry for procurement of spares for repairing , servicing of dgms approved automatically computerised recording speed indicator , automatic contrivance digital depth , speed indicator of nimcha colliery pit 8 n 3 respectively under satgr single tender enquiry for procurement of spares for repairing , servicing of dgms approved automatically computerised recording speed indicator , automatic contrivance digital depth , speed indicator of nimcha colliery pit 8 n 3 respectively under satgr , recording unit for arsi ( part no . : vk-2004-841 ) , data convertor card ( part no . : vk-2004-801 ) , ups arsi ( part no . : vk-sp-902 ) , monitor ( part no . :- vk-sp-903 ) , micro controller card ( part no . : vk-2010-101 ) , display card ( part no . : vk-2010-102 ) , sensing unit ( part no . : vk-su-132 )