You can use these to make your own personnalized buble level ruler. They are fine. Relatively clear and transparent so you can easily see the buble position. You can also DIY a LED backlight to facilitate the vision in dark places. You get 5 so you can experiment different things. I recommend

You can use these to make your own personnalized buble level ruler. They are fine. Relatively clear and transparent so you can easily see the buble position. You can also DIY a LED backlight to facilitate the vision in dark places. You get 5 so you can experiment different things. I recommend

You can use these to make your own personnalized buble level ruler. They are fine. Relatively clear and transparent so you can easily see the buble position. You can also DIY a LED backlight to facilitate the vision in dark places. You get 5 so you can experiment different things. I recommend

Nice product as described

Nice product as described

Nice product as described