The Chartwell 2426 survey level book is used to record the collimation, reduced level, and distance of surveys.
Page column headings: Back Sight - Intermediate - Fore Sight - Collimation or H.P.C. - Reduced Level - Distance - Remarks Section
192 x 120mm (7.5" x 4.75")
Printed in permanent ink
50% rag bond paper sewn with rot-proof thread
Cover can be folded back flat
Hard cover with rounded corners to save pocket wear