What do I have here ?

[fisherman4737]

Greetings,

In my late Father's things, I found a pen set.

A label on the outside says:

1 Each Freehand Ltg. Pen Set
1 Each 6,4,2,0,00,000
6675-641-3069
Arthur Brown & Bro., Inc.

Each of the pens is stamped into the brass "Art Brown"

I know nothing about these and am looking for more information.

[Stands on Feet]

Those are drafting pens. I think you use an eyedropper to put India ink between the tines. The knob is used to adjust the width of the line.

[Cyril]

They are drafting RULING PENS . You can also dip in ink to use them. these pens are means to be using with thick velocity in such as Rotring drafting ink or India ink I guess,
also they will work on fountain ink like Platinum carbon Pigment on special papers like Bristal bords.

[~JJ]

Yeah, Ruling pens. Google 'ruling pen set' & you can get an idea of their value, if you wish. Unfortunately (or not?) they're another thing computers basically obsoleted.

[kazoolaw]

There is a pen shop in NYC, Arthur Brown & Company. I’m not sure its current incarnation is the same as the original, old time store.

https://www.artbrown.com/