Typical hardness range for 729 rubbers.

[igorponger]

729 rubbers would be rarely marked with factual numbers to expose hardness of the sponge incorporated. Most rubbers would use hardness degree in accordance to the diagramme, from SOFT to HARD degree. Take note here, 729 brand adopted Shore A scale as a standard measure.

• 49* ≈ HARD
• 47* ≈ Middle- Hard
• 45* ≈ Middle
• 43* ≈ Middle-Soft
• 41* ≈ SOFT

This is 729 standard rubber range from 'soft' to 'hard' degree

 

[Fnub]

They also have an another scale. Like DHS but 1 degree difference