Thickness (caliper) tester

Purpose
Thickness is a key characteristic of paper material with paper of identical grammage, a higher thickness goes hand in hand with enhanced stiffness and elasticity and the superior printability and opacity level. Additionally, increased thickness or caliper reduces printing ink strike-through and show-through


Principle
Thickness or Caliper of paper is measured with a micrometer as the perpendicular distance between two circular, plane, parallel surfaces under a pressure of 1 kg./ cm2.Since paper is an elastic material, thickness measurement are performed with a mechanical caliper under a defined load per unit area. The measured thickness value is indicated in (µm)

How to use
Prepare paper sample as necessary
Lift up the clipper with turn round the screw (up-down handle)
Fill in paper sample and Released screw (up-down handle)
Read the tester result on showing needle and wrote
Do it couple time with different space point
Count the average result

THICKNESS tester (electronic caliper measurement)
Construction

Bed
Sample place
Power switch(push on, push off, red light indicated)
On switch
Span switch(Ten-turn pot with locking turn counting dial)
Function switch (ON, RUN, READ)
Zero control switch(Ten-turn pot with locking turn counting dial)
Display monitor
Clear switch(White push button adjacent to average button)
Average switch(Red push button on right side of front panel)