Post Processor, test file and documentation are in the zip file. Post will output G20 or G21 based on user preference settings for units. Please refer to the documentation for more details. Here is a sample of the iso g-code output:

(0035)
(LANGMUIR MR-1 GANTRY XYZ - POST VER: 052625-1)
(ICAM FOUNDATION POST: langmuir_mr1_gantry_xyz.dmp)
(POSTED: 5/30/2025 AT 9:17:17 PM)
(TOTAL MACHINING TIME: 0:02:10)

(T1  D=6.35 CR=0. - 1/4 FLAT 3FL)
(T2  D=12.7 TAPER=135.DEG - 1/2 SPOT DRILL 135)
(T3  D=6.35 TAPER=135.DEG - 1/4 DRILL 135 COBALT)
(T4  D=4.0386 TAPER=135.DEG - #21 DRILL 135 COBALT)

G90 G94
G17
G21
G28 G91 Z0.
G90

(FIN ROUND POCKET)
T1
S5000 M3
G54
G0 X.741 Y-3.412
Z25. M8
Z2.5
G17 G3 X.509 Y1.602 Z2.123 I-.507 J2.489 F152.