Syntace and IBM both do them, given the threads on Syntace's customer service and the fact that Syntace US post here I would suggest you go with theirs.
Torque Tool
1-20
The Tool For the Modern Mechanic
Precision parts require precision assembly. Don’t guess—use the Syntace Torque Tool 1-20 to ensure proper assembly of your bike’s critical components.
Adjustment button with dual scale.
After two years you may adjust your Syntace Torque tool at Syntace.
Accessories Allen Bit-Kit
Weight 385 g
Length 220 mm
Square Size 1/4"
Measuring Range 1-20 Nm
Precision +/- 4%
Color Matte Chrome Plated Price (GER): 114,80 €
Bicycle-Specific Design
Highly accurate, and with a range of 1-20 Nm, the Torque Tool 1-20 can be employed for nearly all critical fasteners on your bike.
Dual-Scale Accuracy
For convenience, the Torque Tool 1-20 features a dual scale for Newton-meters and pound-inches.
Industrial Quality
Each Torque Tool comes with a calibration certificate, and is guaranteed to be +/- 4% accuracy.
Easy Adjustment
Simply preselect the torque by rotating the adjusting knob via its swing-out lever, and the Torque Tool gives perfect torque readings..
Durable Precision
The fine-tooth ratchet is low-friction, durable and precise. And the left/right ratchet selector is easy to manipulate, even with gloves on.
Compact Accuracy
Just 220mm long—almost pocket-size. With 1/4” drive, to fit standard sockets.
"How bad can it be?" - SimpleS