







Hassler Instruments Bolt Action Spring Bar Tool - Brass & Ultem Limited Edition
Complimentary Ground Shipping on U.S. Orders $100+ and Priority Shipping on $200+
This extremely limited Gladfellow collaborative edition is machined from black ultem 1000 and brass. The black ultem lends a Montblanc aesthetic to this already elegant tool, which features the signature Gladfellow logo on the end cap.
Each tool is also marked for authenticity with "HASSLER" on the front side of the pocket clip and numbered on the inside of the pocket clip.
Do not miss the opportunity to own the absolute best in spring bar tools. It's a perfect complement to any watch collection.
-
Extremely limited edition.
-
Tool body machined from solid Black Ultem 1000 with machined solid brass hardware for smooth operation and excellent stability.*
-
Includes replaceable Bergeon Fork, Fine: 6767-AF on the tip.
-
Includes replaceable Bergeon Pin, Fine: 6767-BF under the screw cap.
-
Bolt action protects the spring bar tip.
-
Individually numbered.
- Made in the USA.
Dimensions: ~5.5" (long) x 3/8" (diameter)
*Brass will oxidize and develop a stunning patina. Please make sure to read our return policy regarding brass and copper products.
Want to know more?
Ultem 1000 is a high-strength plastic resin known for its exceptional mechanical properties, making it ideal for demanding applications. It offers excellent heat resistance, maintaining its structural integrity even at elevated temperatures, and has remarkable resistance to cracking and environmental stress.
Its unique combination of strength and durability, coupled with lightweight characteristics, makes it a preferred material in industries such as aerospace, medical devices, and luxury goods. Additionally, Ultem 1000 exhibits excellent chemical resistance, dimensional stability, and insulation properties, further enhancing its versatility.
Each tool is made in small batches and are normally only available directly from HASSLER INSTRUMENTS thru a waitlist/pre-order process with lengthy lead times. The Gladfellow collaborative editions will allow you to immediately buy one when they are available in the shop.
Founded by Tom Bushey, HASSLER INSTRUMENTS is named after Ferdinand Hassler, a Swiss-American Surveyor and Mathematician. In 1816 Hassler was appointed as the first Superintendent of the Survey of the Coast, the first scientific agency in the United States. Hassler was known for designing the instruments he used in his surveys, a practice that inspired the creation of the first HASSLER INSTRUMENTS Bolt Action Spring Bar Tool. Each tool is made to order on manually operated machine tools and finished by hand in our St Paul, Minnesota workshop.
We ship using USPS and UPS, depending on the destination and the products ordered. All shipments include tracking and up to $200 of insurance.
Complimentary Shipping (Domestic Only):
- USPS Ground Advantage: Complimentary on orders over $100.00.
- USPS Priority Mail: Complimentary on orders over $200.00.
Shipping Times:
- Most items ship within two business days (Monday to Friday, excluding holidays).
- Orders placed by 12 PM Pacific Time often ship the same day.
- We aim to ship on Saturdays whenever possible, but this service is not guaranteed.
Additional Notes:
- Posters and artwork may ship separately from other items but will be dispatched simultaneously.
- Photographs will ship within two weeks.
- While we offer insurance on your shipments, once a package is marked “delivered,” insurance no longer covers theft or loss.
- Shipping costs are non-refundable.
International Orders:
- For international orders, customs duties, taxes, and fees may apply. These are determined by your country and are the responsibility of the recipient.
- We do not ship knives internationally.
- We ship UPS only.
Returns are accepted within 30 days of receipt of your order, provided the merchandise is in its new, unused condition and includes the original packaging. Unfortunately, returns received after the 30-day period will not be accepted.*
Exceptions:
- Lighters: We cannot accept returns for lighters that have been filled with fluid.
- Brass/Copper Products: Items that have had their vacuum seal opened or have been handled and exposed to oxidation are considered used and are not eligible for return.
If the return is due to our shipping error or a defective product, we will refund the non-expedited shipping costs of the return. Otherwise, return shipping costs are non-refundable.
For our full return policy, please see return policies.
Choose options
For a deeper look...
A luxury tool for your luxury watch: Hassler Instruments
A luxury tool for your luxury watch, Hassler Instruments combines Swiss-grade precision with minimalist elegance. Designed for discerning collectors, each tool is crafted to elevate the experience of strap changes and watch maintenance — transforming routine care into a refined ritual.
