Review on 🧲 Advanced Precision Bubble Horizontal Magnetometer 521815Mm: Enhanced Research and Measurement Capabilities by Demetrius Young

These blocks are small spirit levels encased in clear plastic that look exactly like the small blocks that come built into all my spirit levels. I bought these to check the levels of graphics cards (with brackets) and liquid cooling hoses when building computers, and I needed a small, non-conductive bubble level that could be easily inserted into the case (often with limited areas). ). They work great for this application.