The point angle of centre punch is

Marking off table surface

During Marking, the reference surface is provided by Marking off table surface.

Accommodation bolts

An angle plate is a work holding device used as a fixture in metalworking. Angle plates are used to hold workpieces square to the table during marking out operations. The slots are provided on angle plate for accommodation bolts.
Slotted holes or "T" bolt slots are machined into the surfaces to enable the secure attachment or clamping of workpieces to the plate, and the plate to the worktable.

A and B

• V blocks are generally made of hardened steel or cast iron and are available in a wide range of sizes.
• They are used when laying out or drilling round work.
• They are found in grade A and grade B.
• 'B' grade V blocks are made from closed-grain cast iron and 'A' grade V blocks are made from high-quality steel.

All of the above

A divider is used for scribing circles, scribing arcs and Transferring and stepping of distances.