Martin Okenica - op. 36 / 2020, H. Hauser model 1920, spruce top, walnut back, glossy oil varnish

Instrument - Identification:
- Built by: Martin Okenica
- Opus number: 36
- Year of construction start: 2020

Specification:
- Type: late romantic guitar
- Bracing pattern: fan pattern, Hermann Hauser I. (1882 - 1952) design
- Number of strings: 7
- Scale length: 645.0 [mm]
- String spacing - at the saddle: 11.0 [mm]
- String spacing - at the nut: 7.6 [mm]
- String action - 12th fret, 1st string: 3.1 [mm] (adjustable)
- String action - 12th fret, 6th string: 3.7 [mm] (adjustable)
- Nut width: 53.0 [mm]
- Length of 12th fret: 67.0 [mm]
- Upper bout: 282 [mm]
- Waist bout: 230 [mm]
- Lower bout: 368 [mm]
- Tuning mechanism: Wittner internally mechanized pegs, gear ratio 1:8.5
- String action adjustment: floating fingerboard
- Additional neck reinforcement: -
- Number of frets: 20
- Fretwire: T-profile
- Armrest: -
- Weight: 1.4 [kg]

Materials:
- Top: European spruce (Picea abies)
- Back and sides: common walnut / Persian walnut (Juglans regia)
- Back and sides veneer: -
- Braces: spruce (Picea)
- Binding inner: spruce (Picea)
- Binding outer: combination of decorative veneer strips
- Rosette: combination of decorative veneer strips
- Fingerboard: common walnut / Persian walnut (Juglans regia)
- Neck: Norway maple (Acer platanoides)
- Heel: Norway maple (Acer platanoides)
- Head: common walnut / Persian walnut (Juglans regia)
- Headplate: -
- Nut: beef bone
- Tuners / tuning pegs: composite material
- Bridge: European wild pear (Pyrus pyraster)
- Bridge pins: -
- Endpin: blackthorn (Prunus spinosa)
- Saddle: beef bone
- Frets: 18% nickel silver
- Armrest: -

Finish:
- Top: oil varnish, glossy
- Neck: oil varnish, glossy
- Bridge: oil varnish, matt
- Armrest: -
- Rest: oil varnish, glossy

Accessories:
- Stringing: Aquila 19C + 7th string D, possible Pyramid 7-String Russian Guitar 396 200
- Humidifier: Martin 18AHG
- Additional accessories: -

Case - Specification:
- Model: own production - wooden coffin, according to contemporary practice
- Dimensions - Length x Width x Height: 1035 [mm] x 410 [mm] x 130 [mm]
- Weight: 4.3 [kg]

Case - Materials:
- Inner layer: natural wool
- Body: plywood
- Outer layer: black paint Slovakryl, complying with STN EN 71/3