Aj Precision & Automation Private Limited supplies Easy to Operate Belt Grading Machine. Aj Precision & Automation Private Limited is an ISO 9001:2000 registered organisation. Aj Precision & Automation Private Limited manufactures bump test benches, vibration test benches, blower test benches, endurance test benches, performance test benches, vibratory feeders, poly v belts and powder coating machines. The Easy to Operate Belt Grading Machine is designed for measuring the length & Grinding Depth Variation of Poly V Belts.