Instrument device with a rotating needle and circumferentially arranged projected scales

1. An instrument device comprising:

multiple projected scales configured to be indicated by an indicating needle which rotates in response to measurement results, wherein the projected scales are projected toward a viewing position side in an axial line direction of a rotation center axis of the indicating needle, and the projected scales are arranged at intervals in a circumferential direction around the rotation center axis;

a plate member comprising insertion portions configured to receive each of the projected scales such that each of the projected scales projects toward the viewing position side;

an annular portion configured to cover, from the viewing position side, an outer side portion in a radial direction of each of the projected scales; and

a lighting device configured to emit light to the projected scales;

projected pieces each provided between adjacent projected scales in the circumferential direction on an inner peripheral edge of the annular portion; and

grooves each provided between the adjacent projected pieces in the circumferential direction and configured to accommodate the outer side portion of each of the projected scales, the grooves being visible from the viewing position side,

wherein the projected scales include scale visible surfaces on an inner side in the radial direction, and

a visible portion of the grooves has a width in the circumferential direction that is equal to or larger than a width in the circumferential direction of the insertion portions.

2. The instrument device according to claim 1 , wherein

the annular portion has an inner peripheral edge line,

each scale visible surface has an outer peripheral edge line,

when viewed from a viewing position side, the outer peripheral edge line of each scale visible surface is coincides with the inner peripheral edge line of the annular portion,

each projected scale includes a connecting surface which is connected to the scale visible surface and located further away in an outer radial direction than the inner peripheral edge line of the annular portion, and

each connecting surface has a direction and an angle of inclination that are the same as those of corresponding scale visible surfaces.

3. The instrument device according to claim 1 , wherein

when viewed along the axial line direction, a shape of the insertion portion coincides with a shape of the projected scale.

4. The instrument device according to claim 2 , wherein

when viewed along the axial line direction, a shape of the insertion portion coincides with a shape of the projected scale.