3 fingers on a sectional=about 10 nm.
You must have itty-bitty fingers.
3 fingers for me (when I'm not drinking scotch) is about 15 nm.
Anyway, to get back on-topic, I just had a mock check-ride a few weeks ago and the instructor had me level off at 2,500' (instead of 4,500') which threw my TOC figure off and had me scrambling to calculate my next few checkpoints. Then, right as we were near the "flip-over" point of the sectional (about 15 miles out), he diverted me. So, I'm flipping the chart both ways AND trying to find a good checkpoint to get my GS from (he said the DME and the GPS were inop). This particular part of the chart has hash marks for an Alert Area, the info block for a (shutdown) VOR, a couple of airways, and a compass rose, so it was incredibly difficult to discern a checkpoint. Anyway, I took way too long to get my GS, but I immediately turned toward my diversion airport and just guess-timated my GS based on the winds at departure. I was pretty close on my ETA, but he said that the examiner they use wants to see that you do some basic calculations for the GS. Hopefully, when I do my checkride, the winds will be calm so I can just pretend I'm doing calculations
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This was my first mock and it was pretty intense. Before, it was always a lesson where we were working on, at max, 2 or 3 maneuvers; but now it was everything thrown at me in rapid succession. "OK, let's slow down and show me some slow flight." Did turns, climbs, descents, etc. Then, "since we're so slow, show me a power off stall." Then, "we're pretty low here, how about a turn about that tree." BAM, BAM, BAM....it just kept coming. It was exhausting. Now I know what to expect, so once I've got my "issues" corrected, I'll know what to expect on my next mock. Hopefully, that'll be the last one with an instructor. Then it's on to a mock with the Chief Pilot and then the examiner.