Wittnauer Pert-O-Graph Ref. 7005 Rare Pert-O-Graph Scale Bezel
$1,670.00
- Authenticity Guarantee
- 1-Year Mechanical Warranty
- 30-Day Free Returns
This vintage Wittnauer Pert-O-Graph, reference 7005, is a rare tool watch equipped with an automatic movement and a date function. The stainless steel case surrounds a unique cream-colored dial featuring a distinct grid pattern, applied square hour markers, and a date window at the 3 o’clock position. Its defining characteristic is the bidirectional rotating bezel, which contains a “Pert-O-Graph” slide rule scale specifically designed for project management calculations. This example shows notable wear and fading on the bezel and patina on the dial, consistent with its age.
General
Brand | |
---|---|
Model Line |
PERT-O-GRAPH |
reference |
7005 |
Manufactured |
Switzerland |
Department |
Men |
Dial Color |
Black ,White |
Case
Case Shape |
Round |
---|---|
Bezel |
Bi-Directional Rotating ,Pert-O-Graph Scale |
Case Material |
Stainless Steel |
Case Width |
40mm |
Case Height |
46.6mm |
Strap / Bracelet
Lug Width |
20mm |
---|---|
Strap Material |
Leather |
Strap Color |
Green |
Clasp |
Buckle |
Max Wrist Size |
8.5" |
Movement
Movement |
Automatic |
---|---|
Caliber |
Longines-Wittnauer C11KAS/1 |
Accuracy |
>10 seconds The movement showed a daily accuracy deviation ranging from 0 to 10 seconds across six positions. |
Extras
Warranty Every watch sold by Ottuhr comes with a 1-year mechanical warranty. Select pieces may also include additional guarantees or extended coverage. |
1-Year Ottuhr Warranty |
---|---|
Original Box |
No |
Original Papers |
No |
Timing: The watch has been measured with a timegrapher at six different positions. The rate, amplitude, and beat error are within acceptable ranges.
Functions: All functions including the crown winding, time setting, etc are working as expected.
Integrity: The movement shows no signs of damage, rust, or corrosion, with all components appearing clean and well-maintained.
Authenticity: Each timepiece is evaluated and authenticated in-house. This watch is guaranteed to be correct to its manufacturer and time period.
Warranty: This timepiece includes a 1-year mechanical warranty, activated upon the date of purchase.
Shipping: This timepeice includes complimentary insured shipping within all 50 states.
Returns: If, for any reason, you are not entirely satisfied with your purchase, you may return the product for a full refund within 30 days from the date you received or signed for the item.