Constant-pressure indicating system assures uniform test pressure eliminating false readings due to differences between operators
Supplied in a foam-fitted carrying case.
Greater Than "15 Inch/380 mm" Yarn Package Diameter, use "F" models (Flat Bottom, i.e. HP-5F)
Operation is as easy as pressing the spring-loaded knurled aluminum shell down to the red line.
Less Than "15 Inch/380 mm" Yarn Package Diameter, use "regular" models (Concave bottom, i.e. HP-5)