Measuring a viola accurately is crucial for several reasons. Whether you're a player seeking the perfect instrument, a luthier crafting a new viola, or a collector assessing its value, understanding the various measurements and their significance is key. This guide will walk you through the essential measurements and what they represent. We'll cover everything from body length to string length, ensuring you have a complete understanding of how to accurately measure your viola.
What are the Key Measurements of a Viola?
Several key measurements define a viola's size and characteristics. These include:
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Body Length: This is the overall length of the viola's body, measured from the top of the upper bout to the bottom of the lower bout. This is often the most commonly cited measurement and is a primary indicator of overall size.
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String Length (Vibrating String Length): This is the distance between the bridge and the nut, along the string. This measurement directly impacts the instrument's pitch and tone.
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Upper Bout Length: The width of the viola's body at its widest point near the scroll.
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Lower Bout Length: The width of the viola's body at its widest point near the bottom.
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C-Bout Length: The width of the viola's body at the point where the C-holes are located.
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Height (Depth): The distance from the top of the viola's body to the bottom.
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Rib Height: The height of the viola's ribs at various points.
How to Measure a Viola: A Step-by-Step Guide
You'll need a flexible tape measure or ruler for accurate measurements. Here's how to approach each measurement:
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Body Length: Carefully lay the viola flat on a surface. Measure from the top of the upper bout (the curved part closest to the scroll) to the bottom of the lower bout (the curved part at the opposite end). Ensure the tape measure follows the curve of the body.
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String Length (Vibrating String Length): Using the same tape measure, measure from the nut (where the strings meet the fingerboard) to the bridge (the piece resting on the strings). Be precise in this measurement as it's critical to the instrument's intonation.
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Upper Bout, Lower Bout, and C-Bout Length: For these measurements, use a ruler to measure the widest points across the upper bout, lower bout, and at the C-bouts. Position the ruler perpendicular to the body for accuracy.
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Height (Depth): Place the viola upright. Measure the distance from the top of the body to the bottom, perpendicular to the surface it's resting on.
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Rib Height: This measurement requires a more detailed approach. You might need a thin measuring tool to access the inside of the viola and measure at several points along the ribs. It is best done with the assistance of an experienced luthier or professional.
What Do These Measurements Mean?
Different measurements indicate different characteristics. A longer body length generally corresponds to a deeper, richer tone, while a shorter body length might produce a brighter, more agile sound. String length is crucial for intonation – an incorrect string length will lead to tuning problems. The other measurements contribute to the overall shape and balance of the instrument, affecting its resonance and projection.
Why is Measuring a Viola Important?
Accurate measurements are important for:
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Selecting a Viola: Players need to find an instrument that fits their hand size and playing style. Measurements help determine the suitability of a viola.
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Viola Maintenance & Repair: Luthiers rely on accurate measurements for repairs and adjustments, ensuring proper function and tone.
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Appraisal and Valuation: Collectors and dealers often use measurements (along with other factors) to assess the value and authenticity of a viola.
Where Can I Find More Information?
For more in-depth information about viola construction, measurements, and history, you can consult specialized books on violin making and lutherie, or seek guidance from an experienced luthier or music instrument professional. Remember, precision is key when measuring a viola. Take your time, and if you are unsure, seek the help of a qualified professional.
