I have a couple of that sort at the bottom of my bag in amongst cable offcuts, screws, old knife blades and all the detritus that finds it's way in to a tool bag. So much easier with the ck one, cheaper and your 8" level as well CK Tools T3482 Pocket Spirit Level With Detachable Mini-Level, Magnetic Base & Horizontal / Vertical Vials Length : 210mm / 8¼ Inches, T3482 - http://www.discount-electrical.co.uk/product.php/237390774/ck-tools-t3482-pocket-spirit-level-with-detachable-mini-level--magnetic-base---horizontal---vertical-vials-length---210mm---8--inches