An adjustable spanner (UK, and most other English-speaking countries) or adjustable wrench (US and Canada) is an open-end wrench with a movable jaw, allowing it to be used with different sizes of fastener head (nut, bolt, etc.) rather than just one fastener size, as with a conventional fixed spanner. Several other names are in use, including casually imprecise use of the US trademark crescent wrench.
Description:
- Jaw set at 15°
- Swedish pattern, roller with left hand thread
- With scale
- Chrome-vanadium steel, chrome-plated, polished head
Technical Parameters:
| Clamping width | 20 mm | Total length | 155 mm | |
| Jaw angle | 15° | Weight | 0.145 kg |
Wrenches and applications using wrenches or devices that needed wrenches, such as pipe clamps and suits of armor, have been noted by historians as far back as the 15th century. Adjustable coach wrenches for the odd-sized nuts of wagon wheels were manufactured in England and exported to North America in the late eighteenth and early nineteenth centuries.
technical change and errors excepted
