I had a Longacre digital one for awhile, until I realized it was 2 lbs off, then it hit the junk pile. One of the nicest I’ve ever used is the Intercomp digital, but it was pretty pricey at nearly $300. The one I use now, and that is quickly becoming the standard with tuners, is the Hi Prema, made by Prisma. KartSport distributes them and they are generally around $200. It has a 76lb max, with .1 lb resolution and a 4 tire memory.
KartLift Kart Stands
DeepSeat Kart Seats
877-777-8020
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Don't bother PMing me, it doesn't work. Email is best: tim@kartlift.com.