Indentify these engineering(?) tools...

[classic33]

Does the table on No.2 rotate by use of the knurled knob.

 

[irw]

Does the table on No.2 rotate by use of the knurled knob.

I'm not sure- I'll have to try it when I go over there next!

 

[classic33]

I'm not sure- I'll have to try it when I go over there next!

I'm wondering if the weight of the arm was used to press something into whatever was on the table.

Heavy square thread suggests industrial use.