I've wanted a good surface plate for quite some time but was making a metal parallel plate work as long as I could. I finally found a plate and stand combo priced really well. I got it from MSC Direct as a combo set for 360. The surface plate is "Grade B" or tool room which is more than accurate enough to do what I'm doing with it. As you can see I made some modifications on the stand. I wanted it to be level with my lift gate on the back of the grinder. I will add a plywood bottom for storage and to prevent the top of the surface plate from being a place to lay tools.
I put 1000 lb swivel casters on it for easy moving. The caster plates were so big I had to weld a brace in to accommodate the bolt holes. Two of the casters are lockable. 
When I get a reel ground, I can roll it off the lift gate right onto the surface plate and perform the checks. I also added some arms to each side. One set allows the reel to roll over the drop lip of the lift gate onto the surface plate. The other allows me to roll the reel off the surface plate and check/set the reel without flipping it upside down.
I finally added the bottom. I used a router and mounted a square piece of steel into the plywood so my magnetic indicator would have a place to stick.
