The thin rod depth gauge is applicated in the industry of injection mold, mechanical working ,ware manufacturing . 

After well development, it has obvious advantages than the market similar products.
 

1) Measuring depth gauge base can widen to 85mm, 10mm thickness is more stable.

2) 0-25 and 0-50mm the thin rod can be 1.5 diameter, ensure the rigidity and can measure smaller holes.

3) Measure face is flat with any groove

4)With two holes in the base which allow to add extention base

5)Large LCD screen, easy to read.