50 Taper ISO50 CAT50 50NMTB BT50 Master Plug Gage Arbor Test Bar. Has centers in both ends. Appears to be in excellent shape, however one section of the taper has some scratches on it - it looks like there was something loose inside the box that it was rubbing against. I have taken pictures to demonstrate the condition the best I can.

This was purchased from a long-standing Machine Tool Rebuilding shop and appears to be one of their shop-made tools. This was a renown local place and had a HUGE amount of high quality precision tools, reference surfaces, test bars etc.. Check my other listings for some very interesting and obscure straight edges and test arbors.

As far as pricing goes, that information seems to be very obscure for high-end equipment like this. I searched out some high-quality manufacturers of similar equipment and have priced my items at 40-50% of those amounts.