No, then it would not be a reference dimension. Reference dimensions by definition have no tolerance.
It means you can't look at it or you'll go catatonic Cute. Actually, it means that the entity that is being "referenced", usually a dimension, should NOT be inspected. It might be an overall length of the part. This might be a "cut length" for the machinist where the actual required dimension is shown elsewhere on the drawing.
A leader line is a thin line on a design or blueprint that is used to connect a dimension line with a particular area or point on the drawing.
it is worthless in engineering drawing.
here are few reference books for engineering drawing.....Basant Agrawal and C M Agrawal (2008). Engineering Drawing. Tata McGraw Hill, New Delhi. [1]Paige Davis, Karen Renee Juneau (2000). Engineering DrawingDavid A. Madsen, Karen Schertz, (2001) Engineering Drawing & Design‎. Delmar Thomson Learning.[2]Cecil Howard Jensen, Jay D. Helsel, Donald D. Voisinet Computer-aided engineering drawing using AutoCAD.Warren Jacob Luzadder (1959). Fundamentals of engineering drawing for technical students and professional.M.A. Parker, F. Pickup (1990) Engineering Drawing with Worked Examples‎.Colin H. Simmons, Dennis E. Maguire Manual of engineering drawing. Elsevier.Cecil Howard Jensen (2001). Interpreting Engineering Drawings‎.
FIxed reference points refers to a coordinate system or set of axes within which measure the position, orientation and other properties of an object in the drawing.
NTS
It means you can't look at it or you'll go catatonic Cute. Actually, it means that the entity that is being "referenced", usually a dimension, should NOT be inspected. It might be an overall length of the part. This might be a "cut length" for the machinist where the actual required dimension is shown elsewhere on the drawing.
A reference dimension is a dimension that is not crucial for the effective use of the part. Reference dimensions are not inspected.A reference dimension may also be a dimension that is shown elsewhere in the drawing but is shown in the current view to help clarify the position of other features in the view. This practice eliminates "double-dimensioning" which is not acceptable in drafting standards.
It refers to "centres". When appended to a dimension it means the dimension is to / from the centre mark of a diameter / radius.
The first dimension string on an architectural drawing should begin at the point representing the starting reference point of the dimension being measured. This point is typically indicated by a small arrow or dot.
in engineering drawing, a line with an arrow at each end is called a dimension line
A leader line is a thin line on a design or blueprint that is used to connect a dimension line with a particular area or point on the drawing.
I would understand that to be a drawing that shows true dimensions from three views. Engineering uses this to define a part. It usually has the object viewed from the 3 sides.
I would understand that to be a drawing that shows true dimensions from three views. Engineering uses this to define a part. It usually has the object viewed from the 3 sides.
This is a reference dimension. I.e. the part can and should be manufactured without using it directly. The non-bracketed dimensions should define the form of the part completely.
it is worthless in engineering drawing.
Generally it means that the dimension is for reference only. The actual (real dimension) will show up somewhere else on a drawing. It could also be put on a dimension that you really don't want an inspector to hold tight (material thicknesses that vary with vendor or batch run)