ALVIN 312 Rolling Parallel Ruler, 12 Inch, Clear Plastic Rolling Ruler with Inch and Metric Scales and Protractor for Drawing Parallel Lines,

The ALVIN Rolling Parallel Ruler, Model 312, is marketed as a multipurpose tool for students, artists, and designers. It claims to be ideal for drawing precise lines and circles. However, the customer feedback for this product is mixed. Some customers have complained about the quality of the ruler. They have noticed jagged and wavy edges, which affect the ruler's ability to draw straight lines accurately. Additionally, some reviewers have mentioned that the ruler slides sideways on paper, making it difficult to use effectively. There have also been reports of flaws in the ruler's plastic, causing blips and inaccuracies when drawing lines. Some customers have found that the rollers do not slide easily and fail to hold parallel, further hindering its functionality. However, there are positive reviews as well. Some customers have found the ruler useful for journaling and drawing circles. They mention that with some practice, the ruler becomes easier to use. Overall, the reception of the ALVIN Rolling Parallel Ruler is mixed. While some customers have found it to be a useful tool, others have been disappointed with its quality and performance.