14 CFR Ch. I (1-1-19 Edition) (i) The calorimeters must be a total heat flux, foil type Gardon Gage of an appropriate range such as 0-5 Btu/ft2-sec (0-5.7 W/cm2), accurate to Section3% of the indicated reading. The heat flux calibration method must comply with paragraph VI(b)(7) of this appendix. 438 VerDate Sep<11>2014 12:50 Apr 30, 2019 Jkt 247046 PO 00000 Frm 00448 Fmt 8010 Sfmt 8002 Y:\SGML\247046.XXX 247046 ER31JY03.017 spaschal on DSK3GDR082PROD with CFR Pt. 25, App. F