1. Introduction
The Johnson Digital T-Bevel 1920-0800D is designed for accurate measurement and transfer of interior and exterior angles. This manual provides instructions for safe operation, maintenance, and troubleshooting to ensure optimal performance of your tool.
2. Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in injury or damage to the tool.
- Keep the tool clean and dry.
- Store the tool in a safe place, out of reach of children.
- Do not attempt to disassemble or modify the tool.
- Handle the stainless steel blade with care to avoid injury.
- Dispose of batteries according to local regulations.
3. Product Overview
Familiarize yourself with the components of your Digital T-Bevel.

Figure 1: Johnson Digital T-Bevel 1920-0800D with key components labeled. This image shows the stainless steel blade, adjustable locking knob, ON/OFF button, ZERO button, Rev. button, HOLD/FLIP button, large LCD screen, and impact-resistant ABS handle.
- Stainless Steel Blade: Durable, rust-resistant blade for angle measurement.
- Adjustable Locking Knob: Secures the blade at the desired angle.
- ON/OFF Button: Powers the unit on or off.
- ZERO Button: Resets the angle reading to 0.0 degrees.
- Rev. Button: Reverses the angle reading direction.
- HOLD/FLIP Button: Holds the current reading or flips the display 180 degrees.
- Large LCD Screen: Displays angle measurements clearly.
- Impact Resistant ABS Handle: Provides a durable and ergonomic grip.
4. Setup
4.1 Battery Installation
The Digital T-Bevel requires one CR2032 lithium battery (included). Ensure correct polarity during installation.
- Locate the battery compartment cover on the back of the handle.
- Open the cover.
- Insert the CR2032 battery with the positive (+) side facing up.
- Replace the battery compartment cover securely.
5. Operating Instructions
5.1 Power On/Off
- Press the ON/OFF button to turn the unit on.
- Press and hold the ON/OFF button for approximately 3 seconds to turn the unit off.
5.2 Zeroing the Display
To set a reference point or ensure accuracy, you can zero the display at any angle.
- Place the T-Bevel on a flat, level surface or at your desired reference angle.
- Press the ZERO button. The display will show 0.0 degrees.
5.3 Measuring Angles
The Digital T-Bevel can measure angles from 0 to 360 degrees.
- Loosen the adjustable locking knob.
- Position the blade against the surface or object to be measured.
- Tighten the adjustable locking knob to secure the blade.
- Read the angle measurement directly from the LCD screen.

Figure 2: The Digital T-Bevel set at an angle, with the measurement visible on the LCD screen.
5.4 HOLD/FLIP Function
- Hold: Press the HOLD/FLIP button once to freeze the current measurement on the display. Press again to release.
- Flip Display: Press and hold the HOLD/FLIP button for approximately 2 seconds to invert the display 180 degrees for easier reading in various orientations. Repeat to revert.
5.5 Reverse Angle (Rev.) Function
The Rev. button allows for quick calculation of reverse miter angles.
- Press the Rev. button to display the complementary angle (e.g., if the measured angle is 30 degrees, pressing Rev. will display 150 degrees).
- Press again to return to the original measurement.
6. Maintenance
- Cleaning: Wipe the tool with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the Digital T-Bevel in a dry environment, away from direct sunlight and extreme temperatures.
- Battery Replacement: Replace the CR2032 battery when the display becomes dim or erratic.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not turn on. | Dead or incorrectly installed battery. | Check battery polarity or replace the CR2032 battery. |
| Inaccurate readings. | Tool not zeroed; debris obstructing blade movement. | Press the ZERO button to recalibrate. Clean the blade and pivot area. |
| Display is dim or flickers. | Low battery power. | Replace the CR2032 battery. |
8. Specifications
- Model: 1920-0800D
- Measurement Range: 0 - 360 degrees
- Blade Length: 8 inches
- Material: Stainless Steel blade, ABS handle
- Power Source: 1 x CR2032 Lithium Battery
- Dimensions: 1.25 x 1.5 x 10.5 inches (approximate)
- Weight: 7.4 ounces (approximate)
9. Warranty Information
Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use.
For warranty service, please retain your proof of purchase and contact Johnson customer support.
10. Customer Support
For further assistance or inquiries, please visit the official Johnson website or contact their customer service department.
Note: Specific contact details may vary. Refer to the product packaging or manufacturer's website for the most current support information.


