Distance	Act Diam	Height	-1	0	1	Avg	Pct Error	-2	-3	-4	-5	-6	-7
30	0.45	5	0.38	0.41	0.43	0.41	-9%
20	0.45	5	0.38	0.40	0.43	0.40	-11%
10	0.45	5	0.42	0.43	0.43	0.43	-6%
30	0.7	5	0.55	0.51	0.61	0.56	-27%
20	0.7	5	0.63	0.65	0.68	0.65	-7%
10	0.7	5	0.67	0.68	0.69	0.68	-4%
40	0.9	5.2	0.81	0.84	0.88	0.84	-6%
30	0.9	5	0.78	0.81	0.83	0.81	-10%
20	0.9	5	0.78	0.81	0.83	0.81	-10%
10	0.9	5	0.86	0.87	0.88	0.87	-4%
30	1.95	5	1.98	2.01	2.03	2.01	3%
20	1.95	5	2.01	2.03	2.05	2.03	4%
10	1.95	5	Range	Range	Range	Range	Range
30	2.48	5	2.49	2.52	2.55	2.52	1%
20	2.48	5	Range	Range	Range	Range	Range
10	2.48	5	Range	0.84	Range	Range	Range
40	3.0	5.2	3.08	3.12	3.16	3.12	4%
40	3.7	5.2	3.97	4.01	4.05	4.01	8%	3.93	3.88	3.85	3.81	3.77	3.73
45	3.0	4.9	3.04	3.09	3.14	3.09	3%
				^			Range means out of range. Can't contract or expand scale sufficiently to match target
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			Best fit of scale to target
								One tick to higher value
	One tick to lower value
Targets were rectangular sheets of paper of displayed widths put on flat, vertical wall - an easy to see target.