For interest, we are very specific about aprons. For instance
APRONS GENERALLY
396.
The apron of an Entered Apprentice shall consist of a plain white rectangular lamb-skin or cotton or linen cloth 360-400 millimetres wide and 300-360 millimetres deep, with fall without ornament and with white tie strings.
397.
The apron of a Fellow Craft shall be similar to that of an Entered Apprentice, with the addition only of a sky-blue rosette in each of the bottom angles.
398.
The apron of a Master Mason shall consist of a plain white rectangular lamb-skin (or like material) of similar dimensions to that of the Entered Apprentice, with fall, with sky-blue ribbon not more than 50 millimetres deep, and with sky-blue rosettes on the fall and in each bottom angle, and silver tassels. The waist-band to be of sky-blue or black elastic or ribbon.
399.
The apron of a Master or Past Master shall be similar to that of a Master Mason, but without the three rosettes. In their place shall be placed three sets of perpendicular lines upon horizontal lines (thereby forming three sets each of two right angles). The length of the horizontal lines is to be 65 millimetres each, and of the perpendicular lines 25 millimetres each. These emblems are to be of silver or ribbon, of the same colour as the lining and edging of the apron, 12 millimetres broad.
That reads pretty exact to me...