Before revision: Staff 1 Chief Surveyor and Draftsman 1 First Assistant Surveyor and Draftsman 1 Second Assistant Surveyor and Draftsman 8 Surveyors and Draftsmen 1st Class 16 Surveyors and Draftsmen 2n Class 8 Surveyors and Draftsmen 3rd Class 6 Surveyors and Draftsmen Cadets Each officer was appointed by a warrant from the Master General of Ordnance; the cadets being appointed by letter .
After revision: Staff 1 Chief Surveyor and Draftsman 1 First Assistant Surveyor and Draftsman 1 Second Assistant Surveyor and Draftsman 8 Surveyors and Draftsmen 1st Class 16 Surveyors and Draftsmen 2nd Class 8 Surveyors and Draftsmen 3rd Class 6 Surveyors and Draftsmen Cadets Each officer was appointed by a warrant from the Master General of Ordnance; the cadets being appointed by letter .