Thread: How do you measure QC tool posts

Hi guys,
Well fellas, lathe has arrived andI have finished most of the grunt work in the unpacking and assembly.

the lathe came with a Quick change tool post and two QC fittings.I need more of them naturally.The tool post is marked #250-200 .On the E bay I see QC fittings on auction that are marked #250 - 101 and #250- 102,

I am assuming that the 101 may be a straight tool holder,while the other is maybe a boring bar.

Is the 200 series bigger dimensionally than the 100. If not Keeping some previous comments in mind,I may be looking to buy a dovetail cutter for the school mill and chomp up some 4140.

How does one know about the sizing on the dovetail for instance. Are there listed standards some where, say like there is for morse taper sizes?
Yes I am sending a message to Shaw Machinery to see if I can buy more QC tooling holders.

If it helps the dimensions of the basic tool holder block 250 -202 are:
72mm long, 44 high, 29.4 wide.The dovetail opening is 45mm widest, 35.75 narrowest and 10.9 mm deep.

Thanks
Grahame