Zefal Twin Graph Tire Pressure Gauge Tools

Twin Graph Tire Pressure Gauge

  • Measures up to 160 PSI
  • Fits Presta and Schrader valves

User Reviews (1)

Showing 1-1 of 1  
Barthbill   Weekend Warrior [Nov 23, 2008]
Strength:

reads both Presta and Schraeder tubes.

Weakness:

Poor quality and durability.

This is a very useful concept, but the execution has been short cut. Mine never did hold its reading very well, usually holding a reading about 20 psi lower than the peak reading. It also stopped returning to zero after a while. It also is inaccurate, but the needle can be pulled off the spindle and reset if you have a known good gauge. However, if you set it high for your road bike, it will be inaccurate at lower pressures, such as for your mothers cruiser.

Also, the plastic case started warping and coming apart.

I would not buy another one.

Too bad, though, as I loved it when it worked. If I thought Zefal would stand behind it, and had improved their quality, I would send it back.

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