In measuring up a newly built house so as to enable complete drawings to be made, commence with the ground plan and measure carefully, as everything else must fit this plan. Take the outside dimensions first, then the inside. Then measure first floor, second floor, attics, and cellars. Next take the height from floor to floor at the staircase for the sections. For the elevations make sketches and count the courses of brickwork for height, and the number of bricks in length for intermediate points of width. Details of windows, if mullioned, etc. may be measured by opening the window and reaching out. The pitch of roof must be obtained or assumed, and the roof plan may generally be drawn by repeating the plan of the lower floor and noting where the ridges come. All measurements should be marked on the sketches. Draw out the ground plan first, and test everything else by it. Any roof spaces, etc., not accessible may be left blank or details assumed; the whole thing may be done without a ladder with sufficient accuracy for the purpose.

Details of floors, stairs, cornices, etc., seen in the sec-tious may be left until the last.