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.

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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 decentralized second, we decided to produce a new movement variant based on the baseplate of the HS81 caliber family that we already have: the HS81.6 Each of these movements is engraved with HS81 on the baseplate and with an individual movement serial number on large bridge.

Important: the new movement has a slightly different look!

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)

The Strap

Solid Strap Type H Klassik (Series II)

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

Current delivery time
8 weeks

Mandatory field Straps 20 mm*

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

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User manual

Download user manual for hand-wound watches (115.3 KiB)

Technical details

Movement

Caliber HS 81.6 based on the base plate of an HS81 hand-wound movement
Small second at 9 o'clock position
17 jewels
21.600 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

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

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

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

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)

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)

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

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.

Rubber Strap Glatt

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

Textile Strap Safety Belt

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

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