All ProductsBrowse every BLASTBAG, liner, plug, inflator and tool MTi makes — 400+ field-tested SKUs.106
BLASTBAGS™Inflatable stemming bags — Solo, Aero, Evo and Bag Spider. Cut powder use and improve fragmentation.5
Blasthole LinerBLASTSHIELD™ PLUS and Heavy-Duty Poly liners — keep emulsion dry in wet, fractured ground.2
Blasting Machines & Initiation EquipmentHB-series electric and non-electric blasting machines — MSHA-approved, with circuit continuity.14
Collar / Hole ProtectionCOLLARCONE hole savers and foam cubes — stop collar collapse, debris fall-in and redrills.8
Delineation & MarkingPINTAGs, solar flashers, stake flags and bandanas — mark, flag and light up the bench.6
Electrical Measurement DevicesDigital ohmmeters and circuit continuity testers — verify your shot before you fire.2
In-Hole AccessoriesSLUMPSTOPPA brushes, multifit spiders, booster locks and shot bags — for reliable, well-loaded holes.5
Inflation EquipmentInflators, droplines, couplings, hose reels and repair kits — full setup for chemical or air inflation.7
Locks / StoragePadlocks, load locks, steering locks and bin skirts — secure magazines, vehicles and gear.4
LoadingLoad poles, C-hooks, barbed retrievers, tamping plugs and adaptors — everything to deck and prime.7
MeasuringMiTiMEASURE tapes, dip weights, laser hypsometers and GPS — drill depth, dip and field measurement.8
SafetyHi-vis vests, fall protection, earplugs, lightning detectors and first-aid — keep your crew safe on the bench.21
Signs/PlacardsDanger, Keep Out and Explosives warning signs plus DOT placards — adhesive, aluminum and magnetic.4
Stemming PlugsROCKRIVET, MITIPLUG, SPRINGLOCK and MARS — friction stemming plugs that lock the deck and hold the gas.6
ToolsCordcutters, shot firer mirrors, blasthole cameras, MITI hooks and clips, smoke dischargers and batteries.20
Measurement is the part of a drill and blast day that nobody celebrates and everybody depends on. Wrong depth, wrong burden, wrong stemming height — every one of those shows up later as poor fragmentation, flyrock, wasted powder, or a re-drill.
This collection covers the four measurements every crew takes: hole depth, burden and spacing, stemming column height, and in-hole conditions. Weighted tapes, engineered depth gauges, laser rangefinders, GPS, and temperature probes — built for the bench.
Professional laser rangefinder for long distances.
Simple-to-use GPS handheld with extra battery life, wireless connectivity and multi-GNSS support
Measuring tools — weighted tapes, depth gauges, laser rangefinders, GPS, and in-hole probes — do one job each: tell you exactly what's happening on the bench and inside the hole before you load it. If you're getting inconsistent fragmentation, flyrock you can't explain, oversized rock, or holes that have to be re-drilled, the root cause is often a measurement that was off by a foot, a degree, or a few PSI.
MTi GROUP's range of drill and blast measuring tools is built for hard rock mining, open pit, quarrying, tunneling, and construction blasting. Hole depth coverage runs from 25 feet (7.6 m) through to 300 feet (91 m). Four measurement categories — depth, distance, position, and in-hole conditions — let your crew match the tool to the measurement instead of forcing one tool to do every job.
There are four measurements most crews take on every shot, and each one needs a different tool.
Hole depth is measured by dropping a weighted tape, polyline, or mechanical gauge down the hole and reading depth at the collar. The weight pulls the line through dust, cuttings, and water so you get a true bottom reading instead of an obstruction reading.
Burden, spacing, and face height are measured above ground with a laser rangefinder, which fires a beam at the target and times the return. GPS units locate hole collars, bench boundaries, and pattern corners on the site map. In-hole condition tools — temperature probes and emulsion weights — confirm what's actually happening inside the hole before charge goes in.
Used together, the kit covers every measurement from pattern layout through stemming. Used in isolation, each tool solves one specific problem on the bench.
Accurate hole depth means accurate charge weight, which means consistent powder factor across the pattern. Accurate burden and spacing means consistent fragmentation and predictable wall condition. Accurate stemming height means controlled flyrock and air overpressure. Accurate in-hole temperature means safe explosive selection in reactive ground.
The cost of getting any one of these wrong is real: re-drilled holes, oversize rock that needs secondary breakage, flyrock incidents, off-spec explosive performance, and powder you paid for but didn't use. The cost of the tools that measure them correctly is a fraction of one bad shot.
 Depth Gauge
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 MiTiMEASURE Polyline
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 Tape & Reel
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 Lead Weights
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 TruPulse® L2 Laser Rangefinder / Hypsometer
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 Blast Hole Temperature Probe
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 Emulsion Weight
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 Garmin® eTrex® SE GPS
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| What It Measures | Hole depth (engineered tape measure, budget) | Hole depth (engineered polyline, premium) | Hole depth (manual dip-tape) | Sinker weight for any tape, polyline, or gauge | Distance, slope, inclination | In-hole temperature | Explosive height in a column of water | Position, waypoints, routes |
| Range / Coverage | 25 ft – 200 ft / 15 m – 50 m, optional 8/12/16 oz teardrop or cylinder weights | 20 m – 50 m / 60 ft – 200 ft, marked every 0.5 m, optional 8/12/16 oz weights | TuffTape brand: 35 m / 65 m (115 ft / 213 ft). Fiberglass variants on same page: 100, 200, 300 ft (30 / 61 / 91 m) with optional 8/12/16 oz weights | 8 / 12 / 16 / 24 oz (227 – 680 g); teardrop OR cylinder | Up to 3,900 ft (1,200 m) non-reflective; 7,200 ft (2,195 m) reflective; ±0.5 m distance, ±0.5° angle | 30 m / 98 ft length, marked every 0.5 m. Comfortable to 100°C / 212°F | 3" with 8 oz (76 mm / 227 g) or 4" with 16 oz (102 mm / 454 g) | Multi-GNSS: GPS, GLONASS, Galileo, BeiDou, QZSS — global |
| Build / Power | Fiberglass line with tough connector that won't snag on rough collars; lowest cost-per-tool in the engineered-gauge category | Blue stainless-steel core — no stretch, no tangle, thick protective coating, solid feedback when dipping; ~3× the price of a Depth Gauge | 12 mm transparent abrasive-resistant ribbon, 50% thicker than other brands, reverse-readable up to 4 m / 13 ft | Non-sparking lead; pairs with TuffTape, MITIMEASURE, or Depth Gauge | IP67 rugged housing, 5x scope, CR2 battery (~10 hr) | K-type thermocouple + FLUKE 51-2 thermometer + CORDWHEEL + 450 g (16 oz) dipweight; battery-powered | Plastic collar that slows at the top of the emulsion column, lead weight on the bottom | IPX7 water-resistant, 2.2" display, digital compass, AA battery (168 hr life) |
| Non-Sparking | Yes | Yes | Yes | Yes | — | No | — | — |
| Best Fit | Best-seller daily driver when budget matters | Crews that don't want to replace their depth gauge often and want something durable | Daily production drilling | Wet, dusty, or obstructed holes | Burden, spacing, face height, bench layout | Reactive ground, hot holes, sulfide ore | Density / charge depth QA before bulk loading | Pattern layout, collar locations, site nav |
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Pick the Depth Gauge when you want a reliable depth check at the lowest cost-per-tool in the collection. Fiberglass line, tough connector that won't snag on rough collars, optional 8/12/16 oz teardrop or cylinder weights. Sizes 25 ft – 200 ft (15 m – 50 m). Best-seller for both UG and OP — the daily driver when the bench takes a beating and replacement cost matters.
Pick MITIMEASURE™ when the depth gauge has to survive the bench day after day. Blue stainless-steel core doesn't stretch under load, doesn't tangle in wet holes, and gives solid feedback the moment the weight hits bottom. Costs about 3× a basic depth gauge — the math works when crews stop replacing their line every few months. Sizes 20 m – 50 m (60 ft – 200 ft), marked every 0.5 m for fast reading. Built for QAQC measurements, deep holes, and pattern surveying.
Pick this combo when you're measuring every production hole on every shift and need something simple, reliable, and immune to dead batteries. High-visibility miner's tape drops through dust, cuttings, and water with a sinker weight (8 oz, 12 oz, or 16 oz / 227–454 g) pulling the line down a clean path. Cheapest cost-per-measurement in the collection. Fits standard production holes; pairs with any depth-gauge kit.
Pick Lead Weights when you're running TuffTape, MITIMEASURE, or a Depth Gauge that didn't come with a weight pre-attached. Non-sparking lead in 8, 12, 16, or 24 oz (227–680 g), teardrop or cylinder style. The 8 oz handles most production holes; step up to 16 or 24 oz when water, dust, or cuttings start fighting your drop. If you order a depth gauge with a weight, we'll connect the two with a durable, non-snagging fitting.
Pick the Blast Hole Temperature Probe when you're working reactive ground, sulfide ore, or any site with a history of heated holes. K-type thermocouple, 30 m / 98 ft of downline marked every 0.5 m, FLUKE 51-2 thermometer in the kit, 450 g (16 oz) dipweight pre-attached. Comfortable to 100°C / 212°F; reads higher but with reduced shielding life. Important: this is the only product in the collection that isn't non-sparking, so don't use it where non-sparking gear is required.
Pick the Emulsion Weight when you're loading bulk emulsion and need to confirm explosive height before charge goes down. The plastic collar slows at the top of the emulsion column, letting you read where the explosive ends and the water begins. Two variants: 3" with 8 oz (76 mm / 227 g) for smaller holes, 4" with 16 oz (102 mm / 454 g) for larger ones. No batteries, no electronics — just a density check at the hole.
Dip tapes, depth gauges, polylines, lasers, GPS, and in-hole probes — the tools that turn a drill plan into a real, loaded, verified pattern. Used by drill-and-blast crews across hard rock mining, open-pit, quarry, tunneling, and construction blasting to catch driller errors, off-spec product, and bench layout drift before they cost a shot.
Measurement tools that hold up to real drill and blast conditions.
Designed for rough collars, dust, water, broken benches, and cold mornings — not office desks. TuffTape ribbon is 50% thicker than other brands. MITIMEASURE's stainless-steel core won't stretch. TruPulse is IP67-rated; Garmin is IPX7. Every tool in the collection holds up to dropped, dusty, repeated use.
Depth, burden, position, in-hole conditions — four different measurements, four different tools. Match the tool to the job instead of forcing one to do everything. Pick TuffTape for daily dipping, Depth Gauge or MITIMEASURE for engineered depth checks, TruPulse and Garmin for above-ground layout, Temperature Probe and Emulsion Weight for what's inside the hole.
Six of the eight tools in this collection work without power. Dip tape, depth gauge, polyline, lead weights, and emulsion weight — drop them in the truck and they're ready. The TruPulse and Garmin run on standard batteries (CR2 and AA) you can replace from any site store. No dead kit on a Monday morning.
Electric, non-electric, and MSHA-approved initiation equipment.
