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Product Specifications:
| Item | Inside Spring Caliper |
| Caliper Material | Steel |
| Construction | Steel |
| Joint Type | Spring |
| Leg Style | Flat |
| Max. Measurement | 12" |
| Maximum Measurement | 300 mm, 12" |
| Maximum Measurement - Mm | 300 mm |
| Minimum Measurement - Inch | 0" |
| Minimum Measurement - Mm | 0 mm |
| Nut Type | Quick Spring |
| Nut Type | Quick-Spring |
| Range | 0" to 12", 0 mm to 300 mm |
| Size And Approximate Capacity (in) | 12" |
| Tip Type | Solid Points |
Shipping Info:
| Ship weight (kg) | 0.32 |
| Ship height (cm) | 2.29 |
| Ship length (cm) | 36.32 |
| Ship width (cm) | 17.27 |
| HS code | 9017304000 |
| Country of Origin | US |
Product Details:
- Starrett 73B-12 is a 73-Series, high-grade steel, "Yankee" spring-type inside caliper with flat stock legs and quick-spring nut. It is used to take inside / outside / depth / step measurements in various architecture, machining and carpentry work.
- The spring nut is a quick-adjusting automatic-closing spring nut, used to make fast and positive adjustments. It also features a centrally located adjustment rod for smooth opening and closing of the caliper.
- This Starrett Caliper has a hardened fulcrum stud with a smooth bearing surface and a flexible bow spring for better reliability. It has curved tips for proper transfer of measurement of the internal size of the object.
Product Variants
| Product | Model | Range | Nut Type | Maximum Measurement | Max. Measurement | Joint Type | Tip Type | Leg Style | Construction | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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73A-4 | 0" to 4", 0 mm to 100 mm | Solid | 100 mm, 4" | 4" | Spring | Solid Points | Flat | Steel | €127.68 | |
![]() |
73B-4 | 0" to 4", 0 mm to 100 mm | Quick Spring | 100 mm, 4" | 4" | Spring | Solid Points | Flat | Steel | €131.30 | |
![]() |
73A-6 | 0" to 6", 0 mm to 150 mm | Solid | 150 mm, 6" | 6" | Spring | Solid Points | Flat | Steel | €138.86 | |
![]() |
73B-6 | 0" to 6", 0 mm to 150 mm | Quick Spring | 150 mm, 6" | 6" | Spring | Solid Points | Flat | Steel | €134.27 | |
![]() |
73A-8 | 0" to 8", 0 mm to 200 mm | Solid | 200 mm, 8" | 8" | Spring | Solid Points | Flat | Steel | €201.38 | |
![]() |
73A-12 | 0" to 12", 0 mm to 300 mm | Solid | 300 mm, 12" | 12" | Spring | Solid Points | Flat | Steel | €214.59 |
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STARRETT 73B-12 50343 Inside Spring Caliper 12 Inch Spring
€231.63 /unit






