Description
Torque screwdriver fleets rarely sit in one narrow band. One station may run tiny screws, while the next closes terminal clamps at several times that value. The CDI 8001-O-DTT torque tester covers both ends with a single unit. It reads 20 to 800 in-oz, or 14 to 565 cN·m, through a 1/4 in drive, and it shows results on a digital display.

Reading in-oz and cN·m without confusion
These small units trip people up, so it helps to anchor them:
- 16 in-oz make 1 in-lb, so 800 in-oz equals 50 in-lb.
- 100 cN·m make 1 N·m, so 565 cN·m is about 5.6 N·m.
- The low end, 20 in-oz, is just 1.25 in-lb.
Therefore, write every work instruction in one unit, and set the 8001-O-DTT display to match it if the unit allows. Then nobody has to convert values on the line.
One tester for a mixed driver fleet
The top of the range is forty times the bottom. As a result, one 8001-O-DTT bench can verify light preset drivers and mid-range adjustable drivers without swapping testers. That saves space at the tool crib, and it keeps all results in one log. However, very fine micro-screw work may still call for a narrower in-oz tester, since a small span gives finer resolution at the low end.
Where the CDI 8001-O-DTT torque tester fits
Its listing names three sectors: electrical, oil and gas, and renewable energy. For example, meter and relay builders can check the drivers that close terminal screws. Instrument shops can also verify the tools they use on transmitter covers and small fittings. In addition, solar and battery assembly teams can test the drivers on connector and busbar screws, when values fall inside the range.
Choosing test points
Test each tool at about 20%, 60% and 100% of its own range. Then repeat each point a few times to see the spread. Because the 8001-O-DTT span is wide, most driver ranges fit entirely inside it.
Bench care for the tester
Mount the tester on a stable surface, away from air tools and vibration. Also never load the 8001-O-DTT beyond 800 in-oz. Keep the drive clean so adapters seat fully. Finally, remember that the tester is your reference, so an outside lab should check it on a fixed cycle.
Get a price on the CDI 8001-O-DTT torque tester
This listing comes from our partnership with Lost in HCM, which supplies the tester and sets the price. Include your tool count and units when you request a quote from Lost in HCM. Other benches appear under torque testers and calibration systems, and the CDI Torque site covers the brand. Questions on units or adapters can go to our team when you contact SMK Vietnam.
Tester questions answered
How does 800 in-oz compare with in-lb?
It equals 50 in-lb. So tools set above 50 in-lb need a larger tester.
Should I pick this or a narrower in-oz tester?
Pick the CDI 8001-O-DTT torque tester for a mixed fleet. On the other hand, a tester such as the Snap-on QC1ETT10, at 10-100 in-oz, suits work that stays very light.
Can it test 1/4 in drive wrenches?
Yes, when their settings fall inside 20-800 in-oz. The 1/4 in drive accepts them directly.
















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