"Analytic data I" tab

Dip: mainly used in case of natural SU or anthropic layers. Anyway, can be used also with structures.
The user can enter a free text or let the device automatically detect the inclination. For this purpose, we must:
- push the button ''Get slope from the device''.
- lean the device on the archaeological evidence that is being recorded. By convention, the upper end of the device must be oriented towards the downward slope. Two values are displayed under the field: the one on the left corresponds to the degrees of the orientation, the one on the right corresponds to the degrees of inclination.
- press the value of inclination (the one on the right side) and both values will be set in the "dip" field.

A NOTE ABOUT GETTING SLOPE AND ORIENTATION FROM DEVICE:
Getting slope and orientation from the device implies reading from a couple of internal sensor, one of which detects the magnetic field.
Please note that magnetic sensors of the mobile devices periodically need to be calibrated.
Search the internet for methods to calibrate the sensor (e.g., the "8 figure").
Always check its correct calibration (e.g., pointing the compass to a know direction) before a recording session.

Orientation: mainly used in case of structures. Anyway, can be used also with other kinds of anthropic S.U. or with natural SU.
The user can enter a free text or let the device automatically detect the orientation.
For this purpose, the user has to:
- push the button ''Get orientation from device''.
- align the device in the sense of the archaeological evidence that is being recorded.
- press the button ''Get orientation from device'' again (long press to add degrees too).

Texture: Almost mandatory in case of layers, though it may be used in any case, in principle it defines the tactile quality of the S.U. In some archaeological traditions, this property seems to be considered a mixture of texture and very generic composition. In these cases, the description of the texture is implicitly rendered in the recognition of the main composition of the layer, and adopts definitions such as "Clayey", "Silty-clayey", "Sandy clayey", "Silty-Sandy"...¹

Colour: traditionally, in archaeology colors should be recorded according to the Munsell standard. Being realistic, this is not something all archaeologists do and often, mostly in salvage archaeology, a simply text definition (brown, orange...) is considered enough.
Anyway, ILIUM offer several options for this case. See ''Color picker and color scan ''for more specifications.

Consistency: something as the degree of density or firmness. Mandatory in case of soil layers, but it can be also used in structural S.U.

Plan and section: synthetic description, e.g. rectangular, circular, elliptical...

Technique: mostly used in the case of structural S.U.; it refers to the construction technique. It could be a short description (e.g.: "Irregular stone linked with mortar") or a typified technique (e.g.: opus Africanum...) The user hasn't to specify here the material used in the construction, nor its dimensions or others details. This kind of data fits in the material sheet.

^{1.For a practical way of obtaining these definitions, according to the archaeological standards of the London Museum,
see Carandini, A. (1996), Storie dalla terra. Manuale di scavo archeologico, Einaudi, p. 92.↩}