The numbers
- Manufacturer
- ZeroTech
- Reticle
- RMG-H
- Focal plane
- first focal plane
- Units
- MRAD
- Magnification
- 3–18×
In the first focal plane the subtensions hold true at every magnification, so a hold is a hold wherever the zoom ring sits.
Reticle library · ZeroTech
Drawn to scale from ZeroTech’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.
Drawn from ZeroTech Optics’s published specification.
In the first focal plane the subtensions hold true at every magnification, so a hold is a hold wherever the zoom ring sits.
Official illuminated sheet (ZeroTech's own, titled 'RMG-H [ROKSLIDE] RETICLE', Revision 2 - Rokslide is the hunting forum the reticle was designed with, not the publisher). Letters: A=1.0 B=0.5 C=0.5 D=0.2 E=0.2 F=0.6 G=0.6 H=0.3 I=0.15 J=0.2 K=0.2 L=0.5 M=1.4 N=1.6 O=1.8 P=55 (distance to the RMG-H text). Numbered: 1=0.06 dia 2=0.033 thick 3=0.045 thick 4=0.2 5=0.3 6=0.4 7=0.06 thick 8=0.1 thick 9=0.15 thick 10=1.0 thick 11=0.9 12=0.6. Sheet banner ILLUMINATED; colour not printed. || Re-measured 8 Sep 2026 at 400 dpi (77.6 px/mil), thin-line row located from the tick runs: centre is a 0.06 dot (1) with all four axis lines stopping 0.2 short (E); horizontal +-6 mil: whole-mil hashes 0.6 tall centred (F), half-mil ticks at 0.5/1.5/2.5 standing 0.15 ABOVE the line (I) and at 3.5/4.5/5.5 0.3 tall centred (H), plus a 0.2-pitch scale (D) hanging 0.2 below the line inside +-3; numerals 2 4 6 both sides 0.2 tall (K/4). Vertical: 0.5-mil ticks 6 up and 10 down (whole 0.6 wide, halves 0.29), numerals 1-10 down the left of the axis and 6 at the top. Heavy bars 1.0 thick (10) tip 0.5 past the last tick (L: 6.5 sides/top, 10.5 bottom) and taper over 2 mil; reference ticks straddle the LEFT, RIGHT and BOTTOM bars only - 10/15/20 on the sides (1.4x0.06, 1.6x0.1, 1.8x0.15: M/7, N/8, O/9) and 15/20 on the bottom (there is no 10 tick on the bottom bar, the ladder's own 10 hash is there) - numbered above the side bars (10 small, 15 0.3 tall, 20 0.4 tall: 4/5/6) and left of the bottom bar. The TOP bar carries no marks. Earlier record drew continuous axes through the centre with no dot, omitted all six half-mil ticks on the horizontal, put 10/15/20 ticks on the top bar and a 10 tick on the bottom bar, and carried only a duplicated '20' and one '15' label on the right. || Vector re-read 8 Sep 2026 (pymupdf, exact stroke endpoints, 13.973 pt/mil). Four corrections to the 8 Sep raster pass: (i) L=0.5 is a GAP, not an overrun - the thin stadia end at the last whole hash and the bar tip starts 0.5 mil beyond, so the axes now stop at +-6.0 / +6.0 / -10.0; (ii) the 0.2-pitch sub-scale ticks are 0.15 long (I), not 0.2 - 0.2 is D, the pitch; (iii) the sheet draws no sub-tick at +-0.2, it would sit inside the 0.4 centre gap; (iv) elevation half-mil ticks are 0.300 (H), not 0.29. NOT changed, and a known disagreement: the bar tapers reach full 1.0 thickness at different distances on each arm in the artwork - right 2.25 mil past the tip, left 2.51, top 2.49, bottom 1.99. The record draws all four at 2.0 (the bottom arm's exact value) because an asymmetric ramp is Illustrator sloppiness, not a reticle feature, and the tip positions - the part a shooter can see - match the sheet exactly.
Re-verified 8 Sep 2026 against ZeroTech's own sheet zerotech-rmg-h.pdf ('RMG-H [ROKSLIDE] RETICLE', Revision 2, Adobe Illustrator, 1 page), page 1, by reading the PDF's VECTOR strokes with pymupdf rather than measuring a raster render. Scale and origin come from the sheet's own numerals: the 2/4/6 pairs on the windage axis and the 10/15/20 pairs on the side bars all give 13.973 pt/mil about x=297.2 (worst residual 0.005 mil over 40 mil), and the 1..10 elevation numerals fix y=398.7. Checked line by line: centre 0.06 dot in a 0.4 total gap (E=0.2 each side, cut by a white 0.4x0.4 knockout); no hold grid; windage whole-mil ticks 0.600 centred (F), 3.5/4.5/5.5 ticks 0.305 centred (H=0.3), 0.5/1.5/2.5 ticks 0.150 ABOVE the line (I=0.15), 0.2-pitch sub-scale 0.150 BELOW the line from 0.4 to 2.8 each side (the 0.2 marks are not drawn, they fall in the centre gap); elevation whole 0.600 / half 0.300, 6 up and 10 down; printed numerals 2/4/6 both sides, 6 top, 1-10 down, 10/15/20 on the side bars and 15/20 only on the bottom bar; reference ticks across the bars measured 1.800x0.142 at 20, 1.600x0.103 at 15, 1.400x0.059 at 10 (O/9, N/8, M/7) - taller than the 1.0 bar, which is why they read; top bar carries none. The fine stadia STOP at the last whole hash (+-6.0 windage, +6.0 up, -10.0 down) and the tapered bar tips begin 0.5 further out (L=0.5) with nothing between - measured tips 6.505/-6.491/6.491/-10.501. Bar posts run off the artboard, so their outer ends are not a real extent. Every letter A-P and every numbered callout 1-12 was walked against the drawn geometry.
Harson Ballistics draws this reticle at your magnification with your holdover marked on it, from your rifle, load and conditions. Works with no signal and no account.
Subtensions are published by the manufacturer and reproduced here for reference. Confirm your own dope on a range before you rely on any of it. Harson.ai is not affiliated with ZeroTech.