Snap-On DTT - Manual (Page 7)

Introduction
Use the portable DTT to test “click” type torque wrenches
(adjustable and preset), torque screwdrivers, dial indicating
and electronic wrenches.
The tester features a swivel-neck LCD display with
selectable English or Metric units of measure. 11 models
are available, ranging from 10-100 IN OZ to 60-600 FT LB.
The DTT displays torque values using a built-in straingaged
transducer with an accuracy of ±0.5% of indicated test value
from 10% to 100% of rated capacity, in clockwise (CW) and
counter-clockwise (CCW) directions.
Torque Values
Capture and display torque values in one of four
selectable modes:
• DIAL / ELECT (Peak Hold)
— Captures and displays the highest torque applied
(CW or CCW) until reset. Use to check dial indicating
and electronic torque wrenches.
5
DTT Digital Torque Tester
CLICK ADJUST (First Peak) •
— Responds to the drop-off in torque caused by the
“click” of an adjustable wrench. FIRST PEAK torque
is measured, captured and displayed (CW or CCW)
just prior to the drop-off, even if click torque is
subsequently exceeded.
CLICK PRESET (First Peak) •
— Responds to the drop-off in torque caused by the
“click” of a preset wrench. FIRST PEAK torque is
measured, captured and displayed (CW or CCW)
just prior to the drop-off, even if click torque is
subsequently exceeded.
• SCREWDRIVER (Peak Hold)
— Captures and displays the highest torque applied
(CW or CCW) until reset. Use to check torque
limiting screwdrivers.