credit card caliper

thingiverse

This caliper is crafted to fit snugly inside a wallet, specifically designed for everyday carry at a whopping 85542.3 millimeters.\nThe idea is for it to have ample clearance, but the real-world performance hasn't been thoroughly evaluated yet. The design hinges on the use of metric units and a unique ruler with an absence of numerical markings.\nIt's built with precision printing in mind, printed in layers, with each layer occupying one area to prevent loss of accuracy during scale reproduction.\nThe lower measurement range aims for an accuracy of 0.1 millimeters, but ultimately depends on the printer's capability. To keep things simple, I deliberately didn't incorporate a locking mechanism for measurement comparisons.\nFurthermore, the structural integrity is lacking due to inadequate reinforcement; the measuring rod tends to flex under pressure,\nas did its initial design when printed first as detached from the build platform, forcing an overhaul of its shape, rounded corners and all. Print it on 50 microns layer thickness or up to a maximum of 0.1 millimeters, with the use of black plastic recommended, yet cautioned against; supports will inevitably be required. This particular iteration remains untested in actual usage.