Introduction
The CRAFTSMAN CMHT77637 Laser Measure Tool is a compact and accurate device designed for quick and easy distance measurements up to 40 feet. Featuring simple one-button operation and a rechargeable Lithium-Ion battery, this tool is ideal for various measuring tasks. This manual provides essential information for the safe and effective use of your laser measure.
Safety Information
WARNING: This product emits a Class II laser. Avoid direct eye exposure to the laser beam. Do not stare into the beam. Laser radiation can cause eye injury.
- Do not attempt to modify or disassemble the laser measure.
- Do not point the laser beam at people or animals.
- Use the device only for its intended purpose as described in this manual.
- Keep the device out of reach of children.
- Operate the device in a safe environment, away from reflective surfaces that could redirect the laser beam unexpectedly.
Laser Class II @ ≤1mW @630~680 nm.
Product Overview
The CRAFTSMAN CMHT77637 is a compact laser distance measurer. Its main components include:
- Laser Aperture: Emits the laser beam for measurement.
- Display Screen: Shows measurement readings, battery status, and units.
- Measurement Button (ON/Measure): Activates the device and initiates measurements.
- USB Charging Port: For recharging the internal Lithium-Ion battery.
- Wrist Strap Loop: For attaching the included wrist strap.
Figure 1: Front view of the CRAFTSMAN CMHT77637 Laser Measure Tool, highlighting the display and the main 'ON' measurement button.
Figure 2: Angled view of the CRAFTSMAN CMHT77637 Laser Measure Tool, providing a different perspective of the device's controls and screen.
Setup
1. Charging the Battery
The CRAFTSMAN CMHT77637 is powered by an internal Lithium-Ion battery. Before first use, or when the battery indicator on the display shows low charge, connect the device to a USB power source using the included USB charging cable. The battery indicator on the display will show charging status and full charge.
2. Attaching the Wrist Strap
For added security and to prevent accidental drops, thread the included wrist strap through the loop on the side of the device.
Operating Instructions
1. Powering On/Off
- To power on the device, press the large Measurement Button once. The laser will activate, and the display will show the current measurement mode.
- The device will automatically power off after a period of inactivity to conserve battery.
2. Taking a Measurement
- Ensure the device is powered on and the laser is active.
- Position the rear edge of the laser measure against your starting point.
- Aim the laser dot at the target point where you want to measure the distance.
- Press the Measurement Button again. The device will emit a short beep, and the measured distance will appear on the display.
Figure 3: Using the laser measure to determine the distance to a wooden stud. The laser dot is visible on the target.
Figure 4: Demonstrating the laser measure in action, showing the laser beam extending from the device to the measurement target.
3. Understanding the Display
The display shows the measured distance in feet (ft) by default. It also indicates the battery charge level. The accuracy of the measurement is approximately +/- 1/14-inch at 30 ft.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents. Ensure the laser aperture and display are kept clean for optimal performance.
- Storage: Store the laser measure in a dry environment, away from direct sunlight and extreme temperatures.
- Battery Care: Recharge the Lithium-Ion battery regularly, even if the device is not in frequent use, to maintain battery health.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or depleted battery. | Charge the device using the USB charging cable. |
| Inaccurate measurements. | Laser aperture or target surface is dirty; unstable measuring position; measuring beyond range. | Clean the laser aperture. Ensure a stable measuring position. Verify the target is within the 40 ft. range. |
| Laser beam is not visible. | Bright ambient light; device not powered on. | Use in lower light conditions if possible. Ensure the device is powered on. |
Specifications
| Model Number | CMHT77637 |
| Measuring Range | 40 ft. (12.19 m) |
| Accuracy | ± 1/14-inch at 30 ft. |
| Laser Class | Class II, ≤1mW @630~680 nm |
| Battery Type | Rechargeable Lithium-Ion |
| Charging | USB Charging Cable |
| Water Resistance Level | IP54 (Water Resistant) |
| Included Components | USB Charging Cable, Wrist Strap |
| UPC | 885911574020 |
Warranty and Support
The CRAFTSMAN CMHT77637 Laser Measure Tool comes with a Full Lifetime Warranty. For detailed information regarding warranty coverage, claims, or technical support, please refer to the official CRAFTSMAN website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
For further assistance, visit www.craftsman.com.
