Patented.
• Uses proven stainless steel tube.
• For checking lengths when photographing cracks, etc.
• For checking positions of injection holes (9 holes per m², 6 holes per m²).
SPECIFICATION
Product Number: 01138
Ball Diameter: 17mm dia. (0.7in)
Retracted to Extended Length: 140 to 620mm (5.5 to 24.4in)
Shaft: 7-section telescopic stainless steel tube, pen clip type with graduations
