Dimension tick marks disappering (pos7i7)

The arrowheads/tick marks are simply blocks. Is it possible that they've been redefined to something terribly inappropriate?

Try inserting one using INSERT and see what appears.

Is layer 0 of or frozen?

Generally when something like happens it is realted to some problem with the block that is used for that dimension style ending by AutoCAD. As the block is already in the drawing, any new dims will just use this block rather than redefining it.

Try exploding the dims & see if the end appears, & if you can refedit it. Try wblocking all the dimsout to a different file, purge your drawing & insert a new dim from scratch with the same style name, before bring back the old dims.

Matthew

FWIW:

INSERT TickBlockName=

will accomplish the same thing much quicker. ;)

Try changing the on-screen background colour and see it it makes a difference.

John B

johnbogie btinternet.com Put the "at" in the gap.

Thank you VERY much to everyone who commented on my disappearing tickmark problem. I didn't understand tickmarks were blocks. I discovered that my tickmark block had somehow been changed to a layer I had been trying unsuccessfully to purge . . . was able to refedit it back to layer 0, and voila! Everything was transformed. Never would have figured it out on my own. Thanks so much everyone for sharing your expertise!