State Library of NSW
10 steady true to its work, turning just clear of the divided edge of the box - one that can always be set exactly to the same point - reading of course any difference of bearing upon the Horizontal limit - Mind I don't want a circumferentor but a Theodolite, embracing and combining the advantages of a good circumferentor - I also [?] a powerful microscope to read the needle - but the difficulty of always placing the eye in exactly the same position exists - of course [word crossed out] moving a little on either side makes a difference - perhaps a sight might be fixed immediately above. The Cardinal point which is left open [words crossed out] to act as a guide - Dark glass for observing the sun - Plumb bob - Microscope - screw driver - sun shade -
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