Here's a link to their website. The turnaround time for the work they just did on my speedometer (replace the face with an aftermarket one, re-position the needle & calibrate, and replace the odometer gear) was less than 48 hours and cost about $220 (I brought my own speedometer face as they do not make them like NHS does).
Last week you named a place in the DFW area that worked on your vdo gauges. I have dealt with North Hollywood and Palo Alto over the year with good results. But all i need are the inside glass on 3 of them de-fogged. Would you mind giving me the Name, address, and phone # of that place?