I want to buy calipers to measure my progress in losing bodyfat. What resolution do I need?

Question

I want to measure my progress on a weekly basis. Once the calipers resolution goes from 0.5mm to 0.2 or 0.1 mm the price increases drastically. The thing I'm wondering is, if my pinches decrease by an amount smaller than 0.5mm in a week's time and my calipers can't accurately measure this, will this significantly alter my weekly feedback? Judging from say, three pinch sites, if they each decrease by 0.2mm what percentage of bodyfat loss would this translate to approximately?

Answer 1

They have them on ebay. Here's a direct link