What BMI does

BMI (Bayerische Maßindustrie - A. Keller GmbH) is a German family-owned manufacturer of precision measuring instruments headquartered in Hersbruck, Bavaria. Operating for over 60 years under the Keller family's ownership, with Hans Keller as CEO and sole proprietor, the company produces pocket and frame measuring tapes, spirit levels, laser levelling systems, and workshop measurement tools including vernier calipers, digital calipers, micrometers, and measuring wheels. Its portfolio spans six product categories—pocket tapes (BMImeter, 411 VARIO), frame and case-type tapes (Ergoline, Radius, Standard, Basic, Brass Frames), spirit levels (EUROSTAR, HIGHPRECISION, ALUSTAR, ROBUST, SUPERSTAR, plus electronic Levelboy and Incli Tronic), laser and levelling technology (uniLASER, topoMAT, Nautilus IPX7, autoMAGIC, Laserking), rules and gauges (wooden and plastic folding rules, metal rules, workshop measurement tools), and angle/surveying equipment (Winkelstar, Quadranfix, Rollfix measuring wheels). The company serves professional tradespeople (carpenters, builders, metalworkers, plumbers, electricians) and industrial manufacturers who require EC accuracy class I/II/III compliance and professional-grade durability.

The company's technology base rests on several proprietary, patented innovations: the FLEXTOP tape tip that prevents breakage at the commencement point, ultrasonic-welded vial fixation that ensures lasting spirit-level accuracy, ball-bearing frame mechanisms (Ergoline series) enabling convertible left/right-hand operation, and the Electronic Safety Program (ESP) which automatically stops construction lasers on impact or position change. Premium product specifications include measuring accuracy up to 0.3 mm/m on the HIGHPRECISION spirit level, vial bubbles moving 5x faster than ordinary levels for earlier inaccuracy detection, IP55 to IP67 environmental protection ratings on laser instruments, TÜV-approved calibration-capable measuring wheels, and warranties of up to 30 years on vial durability. Manufacturing is conducted at the single Hersbruck facility under a 'made in Germany' quality positioning, with EN60900:2004 electrical-safety certification on the Polywood non-sparking 1000V-insulated spirit level.

BMI operates a direct hardware-sales model with no software, subscription, or recurring-revenue components evident in the source data. Products are distributed through the company's own retail catalogue (available as PDF download or printed copy), the bmi.de website, and contact-based quote sales via phone (+49 9151 7301-0) and email ([email protected]). Pricing is not publicly disclosed; transactions are quote-based with pay-as-you-go billing. A separate promotional items catalogue supports custom-branded measuring tools for orders of 300+ units with custom colour options, functioning as a B2B merchandise/advertising channel alongside the primary trade and industrial end-customer sales.

Name

BMI

Legal name

Bayerische Maßindustrie A. Keller GmbH

Website

https://bmi.de

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

251–500 employees

Short description

BMI (Bayerische Maßindustrie - A. Keller GmbH) is a family-owned German manufacturer of precision measuring instruments—tape measures, spirit levels, laser levelling systems, and workshop gauges—serving professional tradespeople and industrial manufacturers from its Hersbruck headquarters.

Ownership category

akta.pro rank

Product category

Precision Measuring Instruments

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

akta.pro secondary industry

Calibration Services & Standards (Calibration labs, reference standards, traceability services) (IMAGAFAH)

Keywords

• Precision measuring instruments
• Tape measures
• Spirit levels
• Laser levelling equipment
• Workshop measurement tools

Headquarters

HQ city

Hersbruck

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Measuring Instruments Sales: BMI generates revenue through the sale of physical measuring instruments including pocket tapes, frame measuring tapes, spirit levels, laser levelling equipment, and workshop measurement tools. Products are sold through catalogues and direct distribution.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

BMI manufactures and sells precision measuring instruments including pocket and frame measuring tapes, spirit levels, self-levelling construction lasers, folding rules, workshop measurement tools, angle measurement devices, and surveying equipment. Products are designed and produced in Hersbruck, Germany, meeting EC accuracy class standards and featuring patented innovations such as the FLEXTOP tape tip, ultrasonic-welded vials, and the Electronic Safety Program for lasers.

Product overview

BMI (Bayerische Maßindustrie - A. Keller GmbH) is a German measuring instruments manufacturer offering a comprehensive portfolio of precision measuring tools under the 'Professional quality - one-stop shopping' motto. The product range comprises six main categories: (1) Pocket tapes including the award-winning BMImeter and 411 VARIO series; (2) Frame and case-type measuring tapes under the Ergoline, Radius, Standard, Basic, and Brass Frame sub-brands; (3) Spirit levels spanning from premium EUROSTAR and HIGHPRECISION to professional ROBUST, ALUSTAR, SUPERSTAR lines and electronic Levelboy/Incli Tronic; (4) LASER and levelling technology including uniLASER construction lasers, topoMAT and Nautilus IPX7 rotating lasers, autoMAGIC cross-line lasers, Laserking and Laserboy II clamp-on units; (5) Rules and gauges including wooden folding rules (9002/9003/9004/9005 series), plastic folding rules (9901/9902), metal rules (961/962/966), and workshop measurement tools (vernier calipers, digital calipers, micrometers); (6) Angle measurement and surveying equipment including Winkelstar foldable angles, Quadranfix digital angle tools, telescopic measuring rods (5035/5045/5048/5054/5063-5065/5075), and Rollfix measuring wheels. The portfolio emphasizes patented innovations like FLEXTOP tape tips, ultrasonic-welded vials, and ball-bearing frame mechanisms. Products are manufactured in Hersbruck, Germany, with accuracy certifications to EC accuracy classes I, II, and III.

Differentiator

Problem solved

Functional benefit

Products and services

• BMImeter pocket tape measure Self-retracting pocket tape measure with specially treated steel tape that rolls out automatically; rust-free, waterproof, break-proof; available in 2m and 3m lengths with belt clip. Targeted at professional tradespeople and craftsmen.
• 411 VARIO pocket tape measure Pocket tape measure available in Standard, Rostfrei (stainless steel), and EG I (highest accuracy) variants; automatic band return with stopper; various widths and lengths. Targeted at tradespeople needing different accuracy and material options.
• Ergoline frame measuring tape Premium frame measuring tape with aluminium frame and ball bearing mechanism; ergonomic design convertible for left and right-hand operation; FLEXTOP tip prevents tape breakage. Targeted at professional users requiring smooth operation.
• Radius frame measuring tape Enclosed case-type measuring tape with ergonomically shaped plastic case, soft-touch surface, park positions for tape commencement ring and crank arm, and slide bearing shells. Targeted at professional users needing compact enclosed cases.
• Brass frame measuring tape Measuring tape frames made of brass for use in chemically aggressive media (oils, alkalis, acids); available with calibration weight or IPM specification. Targeted at industrial users in chemically harsh environments.
• EUROSTAR spirit level Premium spirit level with patented laser markings and reflection-free readability; 2% slope markings on horizontal vial; accuracy 0.5 mm/m; shock-absorbing rubber caps. Targeted at professional tradespeople and craftsmen needing high accuracy.
• HIGHPRECISION spirit level High-precision spirit level with 4-chamber aluminium profile; vial bubbles move 5x faster than ordinary levels; accuracy 0.3 mm/m; shock-absorbing rubber end-caps. Targeted at precision-demanding professional users.
• ROBUST spirit level Heavy-duty spirit level with torsion-resistant multi-chamber profile (65x30mm); highest accuracy 0.5 mm/m; edgeless vials; available with magnets. Targeted at construction and industrial professional users.
• Polywood spirit level First non-sparking spirit level; fully insulated to 1000V according to EN60900:2004; glass fiber reinforced; accuracy 0.5 mm/m. Targeted at electricians and trades working in electrical hazard environments.
• Levelboy electronic spirit level Electronic spirit level with digital display; automatic rotation for overhead work; measures angles in degrees, %, mm/m, inch/ft; accuracy ±0.05° at 0° and 90°. Targeted at trades needing digital angle readout.
• Incli Tronic plus electronic inclinometer Electronic inclinometer measuring angles in degree, mm/m or percent; accuracy ±0.1° at 0° and 90°; display arrows indicate direction to reach 0° or 90°; available with laser module. Targeted at precision-demanding industrial and trades users.
• uniLASER AH construction laser Self-levelling construction laser for horizontal use; Class 2 laser; wavelength 635nm; range up to 300m diameter with receiver. Targeted at construction professionals.
• autoMAGIC cross and 5-beam laser Self-levelling cross and 5-beam laser; multifunction adapter with magnet; range up to 500m with receiver; accuracy ±3mm/10m. Targeted at interior fit-out and construction professionals.
• topoMAT IPX5 construction laser Automatic construction laser with rotation, line, and dot modes; detachable inclinometer; IP55 protection; range 300m diameter; accuracy ±2.6mm/30m. Targeted at outdoor construction professionals.
• Nautilus IPX7 waterproof construction laser Waterproof self-levelling construction laser for horizontal use; IP67 protection; ESP safety function; accuracy ±2.6mm/30m; range 200m. Targeted at construction professionals working in harsh outdoor environments.
• Wooden folding rules Buchenholz (beech wood) folding rules in various lengths (1-5m); brass-plated spring joints; EC accuracy class III; available in yellow, white, or natur finishes. Targeted at tradespeople and craftsmen.
• Workshop measurement tools (calipers, micrometers, gauges) Vernier calipers (760/761), digital calipers (770), depth gauges (763), external micrometers (765), dial gauges (766), protractors (768) - all manufactured to DIN standards. Targeted at industrial quality control and precision engineering.
• Mini Rollfix measuring wheel Compact tandem-wheel measuring device for short distances on solid, even grounds; forward/backward measuring; wheel diameter 159.2mm; measuring range 99,999.99m. Targeted at surveying and construction users.
• Rollfix Super measuring wheel Heavy steel disc measuring wheel with solid rubber tyre; TÜV-approved and suitable for calibration; tolerance 0.02%; measuring range 9,999.99m. Targeted at professional surveyors and industrial calibration users.
• Winkelstar foldable angle level Robust foldable angle level for transferring or taking angles 0° to 270°; angles fixed in 15° steps; built-in vials for use as spirit level. Targeted at carpenters, builders, and construction trades.
• Quadranfix digital angle measuring tool Digital angle measuring tool with LCD display or measuring dial; measuring range 355° in 0.1° increments; horizontal and vertical vials included. Targeted at precision-demanding trades and industrial users.

Quantifiable outcome

• Measuring accuracy up to 0.3 mm/m
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Stabila: Stabila is a German family-owned manufacturer of spirit levels, laser measuring tools, and tapes. Closest direct peer to BMI — same German Mittelstand heritage, same product categories (spirit levels, lasers, measuring tapes), same trade and industrial customer base.
• Nedo GmbH & Co. KG: Nedo is a German manufacturer of measuring instruments including laser levels, rotation lasers, spirit levels, and surveying equipment. Direct peer in the German precision-measuring-tools market serving trades and industry.
• SOLA (Kunstdrechsler GmbH / SOLA-Messwerkzeuge): SOLA is an Austrian manufacturer of spirit levels, laser distance meters, and measuring tools. Direct peer in the European precision measuring instruments market with comparable trade-craftsmen focus and premium positioning.

Broad incumbents

• Bosch Power Tools (Robert Bosch GmbH): Bosch Professional is a broad incumbent with a major line of laser levels, distance measurers, spirit levels, and detection tools. Overlaps significantly with BMI's laser/measuring categories but as part of a much larger power-tools portfolio.
• Hilti AG: Hilti is a broad incumbent in construction measuring and laser tools (rotation lasers, line lasers, total stations). Comparable in laser/levelling categories targeting trades and construction professionals, but with much larger global scale and a fleet-management ecosystem.
• Leica Geosystems (Hexagon AB): Leica Geosystems is a leading manufacturer of high-end laser levels, total stations, and surveying instruments. Comparable in laser and surveying categories BMI addresses with topoMAT, Nautilus, and Rollfix products, but operates in a much higher-end, technology-intensive tier.
• DeWalt (Stanley Black & Decker): DeWalt offers a line of laser levels, distance measurers, and detection tools for construction professionals. Overlaps with BMI's laser/levelling category as part of a broader professional power-tools portfolio.
• Milwaukee Tool (Techtronic Industries): Milwaukee Tool sells laser distance meters, levels, and measuring tools alongside its professional power-tool lines. Comparable in trade-targeted measuring categories but operates at much larger scale and pushes connected/measurement tools.

Others

• Stanley Black & Decker: Stanley is a global leader in tape measures (Stanley, FatMax, Stanley Tylon) and a major player in laser levels and spirit levels. Comparable in pocket/frame tapes and spirit levels but with much wider portfolio and global distribution.

Emerging players

• GeoMax (Hexagon AB): GeoMax offers rotation lasers, pipe lasers, levels, and surveying tools targeting the construction and surveying market. Comparable in laser/levelling and surveying categories where BMI competes with topoMAT, Nautilus, and Rollfix products.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/bmi-messzeuge

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about BMI