Scaling down a table saw miter gauge

[jamesson]

I need to build a table saw miter gauge at about 1/4/-1/8 scale. The center axis of rotation seems pretty straightforward - I have many old rollerblade bearings - but I have no idea how to do the handle assembly (the cylindrical screw arrangement that locks and unlocks the angle) and the sliding action. I have drawer pulls, but they are a little too big for what I'm doing.

My top budget is $50 but I'd like to keep it under $25 if I can

Many thanks in advance for any help

Joe

EDIT:

Probably a little smaller than this

http://shop.prox-tech.com/p/micro-shaper-mp-300?pp=125

 

[Baluncore]

Google images 'thumb screws plastic head'
Does that help?
Go to a cheap shop and buy a Chinese made camera tripod for $2 that has three screws.