Instrument 91

Back to the roots

Instrument 91

Guinand has been building pilot's watches since the early days of aviation. Watches, easy to read like an instrument. In our Instrument 91 we are again using a classic hand-wound movement - as was the case with the first watches for aviation from our manufactory workshop.

Guinand Instrument 91

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The Watch

Due to the reduction to the essentials - the time indication via 3 hands, the readability of the watch is perfect. Driven by a classic hand-wound movement.

With a diameter of 42 mm, it is a grown-up but not oversized instrument watch.

The Dial

The Guinand Instrument 91 features a matte black dial with large, easy-to-read numerals.

The dial indices and numbers are covered with white luminous color grade X1with the highest luminosity, the minute and hour hands, which are handcrafted from steel, are filled with white luminous color.


The Movement

For this pilot's watch with a small second, we decided to produce a new movement variant based on the base plates of the HS81 caliber family that we already have: the HS81.4. The HS81 caliber is based on the construction of the Unitas 6497 Lepine caliber whose plates we have adapted and extensively decorated.


The Housing

A hand-made watch also requires a case made in this way. The finely hand-brushed housing, screwed together from three housing parts, guarantees uncompromising safety.

A slightly curved and anti-reflective sapphire glass on the dial side and a flat sapphire glass bottom ensure absolute suitability for everyday use.


Size comparison

Based on the size values, it is not easy to decide whether the watch fits the wrist, or whether it is too big or too small. To make your decision easier, we have mounted the watch on three different wrist widths that correspond to the usual sizes.

How to determine the correct strap length?

Please note that the wrists shown can only give you an approximate impression of the watch on your wrist, as the shape of the wrist is different for everyone, even if they have the same circumference.

Instrument 91 on the wrist
Medium size wrist (approx. 19 cm / 7.48 inch C)
Instrument 91 on the wrist
Smaller wrist (approx. 17 cm / 6.7 inch C)
Instrument 91 on the wrist
Stronger wrist (approx. 22 cm / 8.66 inch C)

The Strap

Solid Strap Type H Klassik (Series II)

Solid Strap Type H Klassik

Pilot's watches require special straps - sturdy, comfortable to wear and of course they should share the high quality watch has. All leather straps with a lug width of 20mm are suitable for this watch. The pictures show the watch with the robust and soft, anthracite color wild boar leather strap, which is available in standard and XL length. For watch enthusiasts who prefer metal straps - our Type H Klassik metal strap is the right metal strap for this model.

Model Configurator

Instrument 91

Functions
Hours, minutes, small second

Case
Stainless steel with satin finish

Dial and Hands
Matte black dial, indices and numbers coated with white luminescent color C1 (Grade X1), hands made in steel filled with natural white luminescent color C1, small second at 9 o'clock position

Special Features
Refined hand-wound movement

Clasp
Price: From 1.049,00  881,51 € (VAT excl.)

incl. VAT, free shipping within Germany
For dispatch to countries outside the EU, VAT won't be charged.
VAT Refund when purchasing the watch directly in our sales plant.
Unless otherwise specified the delivery time is 2-3 weeks.
Kroko straps (reptile leather) cannot be shipped outside the EU

Technical details

Movement

  • Caliber HS 81.4 based on a Unitas hand-wound movement
  • Small second at 9 o'clock position
  • 18 jewels
  • 18000 vibrations per hour
  • Movement diameter 16 1/2" (36,6 mm)
  • Movement decorated with Geneva Stripes
  • Power reserve approx. 40 hours

Functions

  • Hours, minutes, small second

Case

  • Stainless steel hand satinized
  • Sapphire crystal glass, domed, anti-reflective on the interior
  • Screwed back with sapphire crystal glass
  • Crown double sealed
  • Pressure resistant up to 10 bar

Dimensions and Weight

  • Case diameter: 42 mm / 1.65 inch
  • Case thickness: 12.25 mm / 0.48 inch
  • Band lug width: 20 mm
  • Lug-to-lug distance: 50.7 mm / 1.97 inch
  • Distance between the spring bars: 46 mm / 1.81 inch
  • Weight without strap: approx. 66 grams

Straps 20 mm

Leather Strap Arizona

Leather Strap Arizona Black

Black Cowhide with alligator embossing.
Available with a pin or folding clasp.

Leather Strap Arizona Red-brown

Red-brown Cowhide with alligator embossing.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 190 mm 185 mm 191 mm 186 mm
ideal wrist circumference in inch 7.5 in 7.3 in 7.5 in 7.3 in
max. wrist circumference in mm 210 mm 205 mm 211 mm 206 mm
max. wrist circumference in inch 8.3 in 8.1 in 8.3 in 8.1 in
min. wrist circumference in mm 170 mm 165 mm 171 mm 166 mm
min. wrist circumference in inch 6.7 in 6.5 in 6.7 in 6.5 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Cordovan

Leather Strap Cordovan

Black cordovan, cushioned.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 189 mm 184 mm 190 mm 185 mm
ideal wrist circumference in inch 7.4 in 7.2 in 7.5 in 7.3 in
max. wrist circumference in mm 209 mm 204 mm 210 mm 205 mm
max. wrist circumference in inch 8.2 in 8.0 in 8.3 in 8.1 in
min. wrist circumference in mm 166 mm 161 mm 167 mm 162 mm
min. wrist circumference in inch 6.5 in 6.3 in 6.6 in 6.4 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Monza

Leather strap Monza

Dull finished calf leather with white contrast stitching, BR-padded.
Available with a pin or folding clasp.

Leather Strap Monza Orange

Dull finished calf leather with orange contrast stitching, BR-padded.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 185 mm 180 mm 186 mm 181 mm
ideal wrist circumference in inch 7.3 in 7.1 in 7.3 in 7.1 in
max. wrist circumference in mm 205 mm 200 mm 206 mm 201 mm
max. wrist circumference in inch 8.1 in 7.9 in 8.1 in 7.9 in
min. wrist circumference in mm 167 mm 162 mm 168 mm 163 mm
min. wrist circumference in inch 6.6 in 6.4 in 6.6 in 6.4 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Rally

Leather Strap Rally

Soft cowhide leather with fine punching.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 185 mm 180 mm 186 mm 181 mm
ideal wrist circumference in inch 7.3 in 7.1 in 7.3 in 7.1 in
max. wrist circumference in mm 205 mm 200 mm 206 mm 201 mm
max. wrist circumference in inch 8.1 in 7.9 in 8.1 in 7.9 in
min. wrist circumference in mm 167 mm 162 mm 168 mm 163 mm
min. wrist circumference in inch 6.6 in 6.4 in 6.6 in 6.4 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Rotte

High-quality watch strap made of anthracite-colored wild boar leather.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 183 mm 178 mm 184 mm 179 mm
ideal wrist circumference in inch 7.2 in 7.0 in 7.2 in 7.0 in
max. wrist circumference in mm 203 mm 198 mm 204 mm 199 mm
max. wrist circumference in inch 8.0 in 7.8 in 8.0 in 7.8 in
min. wrist circumference in mm 160 mm 155 mm 161 mm 156 mm
min. wrist circumference in inch 6.3 in 6.1 in 6.3 in 6.1 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Rotte XL

High-quality watch strap made of anthracite-colored wild boar leather in XL length.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 192 mm 187 mm 193 mm 188 mm
ideal wrist circumference in inch 7.6 in 7.4 in 7.6 in 7.4 in
max. wrist circumference in mm 223 mm 218 mm 224 mm 219 mm
max. wrist circumference in inch 8.8 in 8.6 in 8.8 in 8.6 in
min. wrist circumference in mm 161 mm 156 mm 162 mm 157 mm
min. wrist circumference in inch 6.3 in 6.1 in 6.4 in 6.2 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Chronissimo (normal length)

Leather Strap Chronissimo

Black cowhide, integrated in the case.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 213 mm 208 mm 214 mm 209 mm
ideal wrist circumference in inch 8.4 in 8.2 in 8.4 in 8.2 in
max. wrist circumference in mm 232 mm 227 mm 233 mm 228 mm
max. wrist circumference in inch 9.1 in 8.9 in 9.1 in 8.9 in
min. wrist circumference in mm 192 mm 187 mm 193 mm 188 mm
min. wrist circumference in inch 7.6 in 7.4 in 7.6 in 7.4 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Chronissimo (short length)

Leather Strap Chronissimo

Black cowhide, integrated in the case.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 197 mm 192 mm 198 mm 193 mm
ideal wrist circumference in inch 7.8 in 7.6 in 7.8 in 7.6 in
max. wrist circumference in mm 216 mm 211 mm 217 mm 212 mm
max. wrist circumference in inch 8.5 in 8.3 in 8.5 in 8.3 in
min. wrist circumference in mm 174 mm 169 mm 175 mm 170 mm
min. wrist circumference in inch 6.9 in 6.7 in 6.9 in 6.7 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Antique

Leather Strap Antikleder

Pull up leather with laquered edging and colored stitch.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 191 mm 186 mm 192 mm 187 mm
ideal wrist circumference in inch 7.5 in 7.3 in 7.6 in 7.4 in
max. wrist circumference in mm 210 mm 205 mm 211 mm 206 mm
max. wrist circumference in inch 8.3 in 8.1 in 8.3 in 8.1 in
min. wrist circumference in mm 170 mm 165 mm 171 mm 166 mm
min. wrist circumference in inch 6.7 in 6.5 in 6.7 in 6.5 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Vintage Brown

Leather Strap Vintage Brown

Saddle leather with light contrast stitching, at tip of strap and at lug ends.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 190 mm 185 mm 191 mm 186 mm
ideal wrist circumference in inch 7.5 in 7.3 in 7.5 in 7.3 in
max. wrist circumference in mm 210 mm 205 mm 211 mm 206 mm
max. wrist circumference in inch 8.3 in 8.1 in 8.3 in 8.1 in
min. wrist circumference in mm 178 mm 173 mm 179 mm 174 mm
min. wrist circumference in inch 7.0 in 6.8 in 7.0 in 6.9 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Leather Strap Vintage Black

Leather Strap Vintage Black

Black saddle leather with black stitching, at tip of strap and at lug ends.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 192 mm 187 mm 193 mm 188 mm
ideal wrist circumference in inch 7.6 in 7.4 in 7.6 in 7.4 in
max. wrist circumference in mm 213 mm 208 mm 214 mm 209 mm
max. wrist circumference in inch 8.4 in 8.2 in 8.4 in 8.2 in
min. wrist circumference in mm 178 mm 173 mm 179 mm 174 mm
min. wrist circumference in inch 7.0 in 6.8 in 7.0 in 6.9 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Rubber Strap Glatt

Rubber Strap Glatt

Black rubber strap, smooth surface,
incl. a laser engraved folding-clasp satinated or bead-blasted

Textile Strap Safety Belt

Textile Strap Safety Belt

Highend textile strap with a soft inlay.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 187.5 mm 182.5 mm 188.5 mm 183.5 mm
ideal wrist circumference in inch 7.4 in 7.2 in 7.4 in 7.2 in
max. wrist circumference in mm 208 mm 203 mm 209 mm 204 mm
max. wrist circumference in inch 8.2 in 8.0 in 8.2 in 8.0 in
min. wrist circumference in mm 167 mm 162 mm 168 mm 163 mm
min. wrist circumference in inch 6.6 in 6.4 in 6.6 in 6.4 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Silicone Strap S60

Silicone Strap S60

Black silicon strap integrated in the case with white seam.
Available with a pin or folding clasp.

Cases 20 mm Type 40 Type 60 Type 31 Type 155
ideal wrist circumference in mm 191 mm 186 mm 192 mm 187 mm
ideal wrist circumference in inch 7.5 in 7.3 in 7.6 in 7.4 in
max. wrist circumference in mm 213 mm 208 mm 214 mm 209 mm
max. wrist circumference in inch 8.4 in 8.2 in 8.4 in 8.2 in
min. wrist circumference in mm 172 mm 167 mm 173 mm 168 mm
min. wrist circumference in inch 6.8 in 6.6 in 6.8 in 6.6 in

Wrist circumference specifications are approx. values and depend on the individual wearing habits.

Solid Strap Typ 3.1

Solid Strap Typ 3.1

Solid stainless steel sports strap

Solid Strap Typ 3.1-V

Solid Strap Typ 3.1-V

Solid stainless steel sports strap with a quickly adjustable folding clasp

Solid Strap Typ H

Solid Strap Typ H polished

Stainless steel strap Typ H polished/satinated

Solid Strap Typ H matte

Solid Strap Typ H matte

Stainless steel strap Typ H bead blasted

Clasp Overview

Stainless steel pin clasps

Pin Clasp polished
Pin Clasp satinated
Pin Clasp bead-blasted
Pin Clasp PVD coated

Folding clasps

Folding clasp, stainless steel polished
Folding clasp, stainless steel bead-blasted
Folding Clasp Rubber Strap bead-blasted
Folding Clasp Rubber Strap satinated