Rating of an instruction for building a camera

Instruction we rated: https://docs.google.com/file/d/0BwLKAovBanVLVEd6dnUtdGZzZEE/edit

We believe that the instructions of Tim Hunkin for building a camera lucida are barely understandable and could undergo many improvements. The instruction appears to be very confusing due to its design and the way it is constructed contentually. The reader is not really able to follow the directions properly as the instructions and the corresponding drawings do not have an order. To make it all more organised and chronological, the author could have, firstly, divided the instructions into points and, secondly, included numbers to the drawings. He also could have explained it more detailed, since it should be understandable for someone who never made a camera lucida before. The way it is written, it would take a long time for a beginner to build it, which is counterproductive. We also noticed that neither a list of what is needed to built it nor clear and detailed pictures of how to make it step by step can be found in this instruction. All in all, the instruction cannot be followed easily and therefore is, in our opinion, not one we would recommend reading.

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Emina Ribo, Monika Maric, Carola Ponjevic