Marmonix MLD-100 Portable Laser Distance Meter

The Marmonix MLD-100 is a 100 m laser distance meter for contractors, surveyors, fit-out teams and facility engineers. It measures from 0.05 to 100 m with ±2 mm ± (100 × 10⁻⁶ × D) accuracy and calculates area, volume and indirect (Pythagoras) heights in a pocket-size 90 g body, with 30-record memory and a built-in spirit level.

Browse all laser distance meters and laser levels, or compare models in our 2026 laser distance meter buyer’s guide.

Key features

• 0.05–100 m range, ±2 mm base accuracy
• Single, continuous, area, volume and Pythagoras modes
• 30-record memory with quick review and delete
• Integrated spirit level for level, repeatable shots
• m / ft / in unit switching
• Auto laser-off (~30 s) and auto power-off (~180 s); runs on 3 × AAA
• Part no. 7603211, 2-year warranty, UAE and GCC supply

Where teams use the MLD-100

• Construction and fit-out: room dimensions, openings, ceiling heights, BOQ take-offs
• Warehouses and halls: long spans and racking layouts beyond 60 m
• Real estate and FM: floor areas and volumes for HVAC and material estimates
• Survey support: quick distances without a total station

MLD-100 specifications

Parameter	Value
Measuring range	0.05 – 100 m
Accuracy	±2 mm ± (100 × 10⁻⁶ × D), D = measured distance
Laser class	Class II
Laser type	490 – 511 nm, <1 mW
Measuring modes	Single, continuous, area, volume, indirect (Pythagoras)
Units	m / ft / in
Data storage	30 records
Level	Integrated spirit level
Auto laser off / power off	~30 s / ~180 s
Operating temperature	0 to +40 °C
Storage	−20 to +60 °C, 85% RH
Battery	3 × 1.5 V AAA
Size / weight	110 × 51.3 × 26.5 mm / 90.2 g
Part number / GTIN	7603211 / 6298043998284
Warranty	2 years

Accuracy at typical distances

Distance	Max. error (calculated from spec)
5 m	±2.5 mm
10 m	±3 mm
30 m	±5 mm
50 m	±7 mm
100 m	±12 mm

Source: official MLD-100 datasheet (Downloads tab).

How to use the MLD-100

1. Press the measure key to switch on the laser and aim at the target, using the spirit level to keep the meter level.
2. Press again to take a single reading, or hold for continuous measurement.
3. Select area, volume or Pythagoras mode and take the requested shots; the result is calculated automatically.
4. Review the last 30 results in memory. In bright sunlight, aim at a light, matt surface for the best range.

MLD-100 vs MLD-60

	MLD-100	MLD-60
Max range	100 m	60 m
Use it for	Large halls, façades, warehouses, plots	Rooms, apartments, fit-out

What’s in the box

1 × MLD-100 main unit, 3 × 1.5 V AAA batteries, user manual, certificate of conformity, warranty card.

MLD-100 laser distance meter: FAQ

<!– wp:rank-math/faq-block {"questions": [{"id": "faq-mld100-1", "title": "How accurate is the MLD-100 at long distances?", "content": "Accuracy is ±2 mm ± (100 × 10⁻⁶ × D). That works out to about ±3 mm at 10 m, ±7 mm at 50 m and ±12 mm at the full 100 m.", "visible": true}, {"id": "faq-mld100-2", "title": "Can I measure 100 m outdoors in bright sun?", "content": "The 100 m range is for good conditions on a reflective target. In strong UAE sunlight the dot is harder to see and the range drops; aim at a light, matt target or measure in shade or at dawn/dusk.", "visible": true}, {"id": "faq-mld100-3", "title": "What can the MLD-100 calculate?", "content": "Area, volume and indirect height or distance using the Pythagoras modes, plus continuous measurement for finding the minimum or maximum distance.", "visible": true}, {"id": "faq-mld100-4", "title": "How many measurements does it store?", "content": "30 records, which you can review and delete on the meter.", "visible": true}, {"id": "faq-mld100-5", "title": "What battery does it use?", "content": "3 × 1.5 V AAA batteries (included). The laser switches off after about 30 seconds and the meter after about 180 seconds of inactivity to save power.", "visible": true}, {"id": "faq-mld100-6", "title": "MLD-100 or MLD-60: which one should I buy?", "content": "Choose the MLD-100 for spaces or façades beyond 60 m; choose the MLD-60 for everyday indoor work where 60 m is plenty. Both are supplied across the UAE and GCC with a 2-year warranty.”, “visible”: true}]} –>