Whatever happens on your dives they won't be as colourful as the Ultimate Diver's Log Book. With 200 high-quality colour pages at a low price this log book is like no other. There are two pages for each dive so there is plenty of room - no more cramped information. The Ultimate Diver's Log Book can help speed up logging a dive or ensure you keep every detail you might find useful in future. It has pre-filled units (both metric and imperial). There's a section to record any kit configuration you want to remember. It can accommodate multiple gas mixes (for the techier ones among us). A guided calculation will also help you work out your breathing rate. The graph paper can be used to draw dive profiles or scale drawings. There's a large plain area for comments, sketches and stamps. And if anything goes wrong, there's even a section for that too. The Visibility Scale is a range of colours - circle or tick the one closest to the water colour on the dive. Then compare this with the depth