... GLIDER METRIC,#MPR30Rolling Rulers/Sliding Ruler/Parallel ruler Product details: Type:Rolling Rulers/Sliding Ruler/Parallel rulerItem No.:MRR30Body Color ... architectural, engineering or design purposes, a rolling ruler allows quickness and accuracy when drafting.Product Advantages, ... Price,Package & Service: Features:Rolling Rulers/Sliding Ruler/Parallel ruler 15cm and 30 cm in Length - Graduated In ...