Wanted: Newall DRO Scales

[S.Heron]

I am in search of a newall DRO scale around 40" I have both spherosyn and microsyn 10nm encoders.

 

[PeterT]

Sometimes you can get lucky on Ebay

Newall for sale | eBay

Find great deals on eBay for Newall. Shop with confidence.

www.ebay.ca

Another source is drop a feeler to a machinery seller. Sometimes when they scrap or flip or convert a machine, there is an extra scale or even complete system sitting on a shelf. Especially if they are not a Newall dealer. My friend was looking for a replacement encoder & found one that way. Also came home with a spare C80 display box for a song.

I've heard people have cut the end off larger-than-required Newall tubes & successfully harvested/replicated the end plug mechanism that keeps the balls intact. Others say there is more to it than that, the balls require some factory calibrated contact force. Maybe that's a company inspired line. Never done it myself. Only read it on the Wild West Web.

 

[S.Heron]

I have been searching through ebay listing's but I figured for what people are asking I would be patient and try to find one that I didn't have to modify or a really good deal on one that's too long. It also gives me a good chance to determine their value.

The DRO that I purchased came with a broken microsyn scale that I have managed to repair which seems simple enough. I taped the tube to a piece of round bar to keep it straight and then epoxied the new end cap I made in place. I used a clamp with slight pressure to hold the new cap while the epoxy cured.Testing it to check calibration may be a bit of a challenge and an unmodified scale would be ideal to compare the two.