AUSTRALIA'S #1 ACOUSTIC GUITAR SPECIALIST
AUSTRALIA'S #1 ACOUSTIC GUITAR SPECIALIST
The Martin Guitars String Height Action Gauge is a must-have tool for players and luthiers who demand precision and consistency in their setups. Designed by one of the most trusted names in acoustic instruments, this handy gauge helps you dial in ideal string action for enhanced comfort, tone, and performance.
With both standard and metric units, the gauge is compatible with virtually any stringed instrument — including acoustic and electric guitars, basses, mandolins, and ukuleles. Whether you're setting up for the first time or fine-tuning a professional rig, this durable gauge provides the clarity and accuracy needed to achieve perfect string height at the 12th fret and beyond.
Dual-unit gauge for measuring in standard and metric
Suitable for guitars, basses, mandolins, ukuleles, and more
Precision markings for quick reference and optimal setup
Ideal for achieving clean, buzz-free low action
Trusted by luthiers and guitar techs worldwide
Measurement Units Standard and Metric
Material Metal
Application String height/action measurement
Suitable For Guitars, basses, mandolins, ukuleles, and other fretted instruments
Recommended Use 12th fret action adjustment
Instruments & Amps
Free courier shipping on orders over $999 to eligible metro areas
$49–$69 standard shipping on lower-value orders
Express shipping available for an additional fee
Regional and remote areas may incur higher freight costs
Accessories
Free standard shipping on orders over $99
Flat $11 shipping under $99
$15 express shipping available
Delivery Details
All orders ship with tracking
Instruments and large items require signature on delivery
If freight costs exceed expectations, we’ll contact you before shipping
Shipping rates, eligibility, and delivery options are confirmed at checkout based on your location.
Buy Now, Pay Later
Zip – 3 months interest-free under $1,000, 6 months interest-free over $1,000
Afterpay – available at checkout
Pay in Full
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Rent to Own
Studio19 Rentals – low monthly payments with the option to buy later
All prices are in AUD and include GST. Payment options are shown at checkout.
If something’s not right, please contact us first and we’ll help you work through the best solution
Returns, exchanges, repairs, or credits are available for faulty or misdescribed items
Return requests should be made within 7 days of delivery
Freight charges aren’t refundable
Non-faulty returns may incur return shipping and a small restocking fee
Opened consumables (including strings and picks) can’t be returned
Returns are assessed case-by-case so we can ensure the fairest outcome for everyone.
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