Ensuring uniform height when laying bricks is essential for achieving a level and aesthetically pleasing finished wall. Here are some tips to help you maintain uniform height:

1. **Use string lines**: Install string lines at the desired height of each course of bricks. These string lines serve as guides to ensure that the bricks are laid at a consistent height across the entire wall.

2. **Check with a level**: Use a spirit level frequently to verify that each course of bricks is laid evenly and at the correct height. Place the level across multiple bricks at various points along the wall to ensure uniformity.

3. **Use spacers**: Place spacers between bricks to maintain consistent vertical spacing and ensure that each brick is laid at the same height as the adjacent ones. Spacers can be plastic or wooden wedges of the desired thickness.

4. **Check with a story pole**: Create a story pole by marking the desired heights of each course of bricks on a long piece of wood or metal. Use the story pole as a reference guide to ensure that each course is laid at the correct height.

5. **Adjust mortar thickness**: If necessary, adjust the thickness of the mortar bed beneath each brick to achieve the desired height. Use a trowel to add or remove mortar as needed, ensuring that the bricks sit level and at the correct height.

6. **Check alignment with neighboring walls**: If the brick wall is adjacent to another structure, such as an existing wall or building, periodically check the height and alignment of the new wall with the neighboring structure to ensure consistency.

7. **Regularly measure and adjust**: Continuously measure and adjust the height of each course of bricks as you progress with the construction. This helps identify and correct any deviations early on to maintain uniformity throughout the wall.

By implementing these techniques and paying close attention to detail, you can ensure uniform height when laying bricks and achieve a professional-quality finished wall.