[hvacker]

Aside form the electronic gauges any gauge is most accurate mid range of it's span, R-410 needs a larger range.
My old R-22 gauges won't give a reliable reading on R-410. 410 might actually damage them by maxing out the
gauge and flexing the bordon tube.
Probably cheaper to go electronic. They tell more than just pressure. I always wanted a set. If nothing else they look cool.

If you look on line be aware that most offered are inferior and made for people that need to charge their cars. Name brands are
notoriously over priced especially from the supply houses. Most will need calibration over time but the gauge manufactures don't give
a good way to achieve that. Replace the gauges over time depending on how often they are used. But who knows when that is.