What is basic Dimension in 50±1 mm?

What is the Maximum Material Condition (MMC) for given hole and shaft?

What is the Least Material Condition (LMC) for given hole and shaft?

Why do engineers need tolerance on mating parts?​

If a shaft of size 30 ± 0.2 is going inside a hole of size 29.9 ± 0.3. What type of fit it is?

If a shaft MMC=21mm, shaft LMC = 20mm and Hole MMC=18mm, Hole LMC=19mm. What type of fit it is?

If a shaft MMC=21mm, shaft LMC = 20mm and Hole MMC=22mm, Hole LMC=23mm. What type of fit it is?

Select the examples of Clearance fit between two parts in real world.