■ Reliable Solution for Maintenance of Diesel Engine Precision boring of Engine Blocks, Steam, Gas, Hydro casing and Coupling hole aligning. Portable Machine. Available with Electrical / Pneumatic / Hydraulic drives. Independently acting Drive and Feed unit. Auto feed unit fitted with precision grounded screw rod. Feed, Drive and Centering units fitted with precision self aligned bearings. Tools bar & Holder fitted with Micro Adjustable unit.