DROs on Amazon

These were posted on another forum, but I thought some of the readers here might be interested. These are reasonably priced DROs that can be fit to your machine tools. Not a completely new idea (using a digital caliper is the same thing), but the readout/display is seperate so that is kinda nice.

6"
http://www.amazon.com/dp/B003JU46J4/ref=pe_54110_15633080_pe_vfe_t3

12"
http://www.amazon.com/dp/B003JUII2A/ref=pe_54110_15633080_pe_vfe_t2

24"
http://www.amazon.com/dp/B003JULE4Y/ref=pe_54110_15633080_pe_vfe_t1

35"
http://www.amazon.com/dp/B003JURUJM/ref=pe_54110_15633080_pe_vfe_t4

Wow, pretty cheap prices for those. Would be decent for a beginner setup.

Hey Murray, good to see you!

Hmmm, interesting stuff. Seems unsettlingly cheap, but kinda tempting. DRO is an upgrade I seriously want. I'm always wary of cheap gear, but as you say it's much the same as digital (optical) calipers. Mounting a set of calipers on your slides is a time honored way of adding a digital (or dial) readout- so in a sense it doesn't really have to be expensive....