Skip to content

Your cart is empty

Continue shopping

Have an account?

Log in to check out faster.

My Bag

Loading...

Subtotal

£0.00

Delivery calculated at checkout

Info@hroberts.com 01162 530 346

Contact Us
About Us
Library
My Account

Search

Search

£0.00 Cart

Menu

All Products
- A-F Categories
  
  Accessories
  Bore Gauges
  Bore Viewers
  Calibration Equipment
  Calipers
  Caliper Gauges
  Check Masters
  CMM
  Contracers
  Data Management
  Depth Gauges
  Dial Indicators (Plunger)
  Dial Snap Gauges
  Dial Test Indictors (Lever)
  Engineers Squares
  Feeler Strips / Gauges
- G-L Categories
  
  Gauge Blocks & Sets
  Granite
  Hardness Testers
  Height Gauges
  Height Masters
  Inside Micrometers
  Inspection Mirrors
  Integrated Scales
  Laser Micrometers
  Levels
  Lever Dial Indicators
  Linear Gauges
  Linear Scales
- M-R Categories
  
  Magnets
  Magnification
  Micrometers
  Micrometers Heads
  Plastiform
  Pocket Comparators
  Profile Projectors
  Protractors
  Plunger Dial Indicators
  Radius Gauges
  Replicating Compounds
  Roundness Testers
  Rules
- S-Z Categories
  
  Search Arms
  Setting Rings
  Stands
  Steel Rules
  Straight Edges
  Surface Roughness Testers
  Thickness Gauges
  Torque
  Unimaster
  Universal Gauge
  Vee Blocks
- Popular Categories
  
  Bore Gauges
  Calipers
  Dial Indicators
  Granite
  Height Gauges
  Lever Indicators
  Micrometers
  Replicating Compounds
  Surface Roughness Testers
  -----
  Clearance Section
- Popular Brands
  
  Accretech
  Bowers
  Eclipse
  Gedore
  H Roberts
  Kroeplin
  Mahr
  Mitutoyo
  Moore and Wright
  Norbar
  Plastiform
  Red Range
  Sylvac
  Tesa
  Trimos
  Verdict
Calipers
- Brand
  
  Mahr
  Mitutoyo
  Moore & Wright
  Sylvac
  Tesa
- Best Sellers
  
  Mitutoyo 500-196-30 - Only £80
  Mitutoyo 500-752-20 - IP Rated
  Mitutoyo 500-197-30 - 200mm
  Mitutoyo 500-754-20 - 300mm
- Range
  
  0-150mm / 0-6"
  0-200mm / 0-8"
  0-300mm / 0-12"
  0-450mm / 0-18"
  0-600mm / 0-24"
  0-1500mm / 0-60"
  Larger than 1500mm / 60"
- Display Type
  
  Dial
  Digital
  Vernier
- Measuring Units
  
  Metric / Imperial
  Metric Only
  Imperial Only
Micrometers
- Brand
  
  Bowers
  Mahr
  Mitutoyo
  Moore & Wright
  Sylvac
  Tesa
- Range
  
  0-25mm / 0-1"
  25-50mm / 1-2"
  50-75mm / 2-3"
  75-100mm / 3-4"
  100-125mm / 4-5"
  125-150mm / 5-6"
  150-175mm / 6-7"
  175-200mm / 7-8"
  200-225mm / 8-9"
  225-250mm / 9-10"
  250-275mm / 10-11"
  275-300mm / 11-12"
  Larger than 300mm / 12"
- Popular Types
  
  Standard
  Interchangeable Micrometers
  Micrometer Sets
  -----
  Blade
  Disc
  Non-Rotating Spindle
  Point
  Tube
  View all Types...
- Display Type
  
  Digital
  Non-Digital
- Measuring Units
  
  Metric & imperial
  Metric Only
  Imperial Only
- Accessories
  
  Setting Standards
  Stands
Bore Gauges
- Brand
  
  Bowers
  Mitutoyo
  Tesa
- Type
  
  Cylinder
  Pistol Grip
  Lever Grip
  Standard (Traditional) Micrometer Style
- Supplied as
  
  Sets
  Individual Units
  -
  Bowers Digital Bore Gauge Sets
- Display
  
  Digital
  Non-Digital
- Accessories
  
  Setting Rings
Dial Indicators
- Brand
  
  Baty
  Mitutoyo
  Sylvac
  Tesa
- Range / Travel
  
  5mm / 0.2"
  12.7mm / 0.5"
  25mm / 1"
  50mm / 2"
  100mm / 4"
  150mm / 6"
- Display
  
  Digital
  Non-Digital
- Measuring Units
  
  Metric / Imperial
  Metric Only
  Imperial Only
- Accessories
  
  Contact Points
  Extensions
  Interchangeable Backs
  Lifting Levers
  Stands
Lever Indicators
- Brand
  
  Mitutoyo
  Tesa
  Verdict
- Type
  
  Horizonal
  Parallel
  Pocket Type
  Vertical Type
- Display
  
  Digital
  Non-Digital
- Measuring Units
  
  Metric / Imperial
  Metric
  Imperial
- Accessories
  
  Styli
  Stands
Height Gauges
- Brand
  
  Mahr
  Mitutoyo
  Sylvac
  Tesa
  Trimos
- Popular Models
  
  Mitutoyo LH-600
  Mitutoyo QM
  Tesa Micro-Hite
  Trimos V3
  Trimos V5
- Range is Between...
  
  0-200mm / 0-8"
  0-400mm / 0-16"
  0-700mm / 0-28"
  0-1100mm / 0-44"
  Larger than 1100mm / 44"
- Type
  
  Measuring
  Scribing
- Display
  
  Digital
  Non-Digital
- Accessories
  
  Probes
  Scribers
Plastiform
- Kits
  
  Starter Kit
  Essentials Kit
  Internal Complex Forms Kit
  View all Kits...
- Cartridges
  
  F20 Compound
  F30V Compound
  F50 Compound
  P35 Compound
  View all Cartridges...
- Putty Products
  
  M25 Putty
  M60
  M70
  M80LP
  M90
- Accessories
  
  Application Gun
  Double Blade Cutter
  Nozzles
  Nozzle Tips
Granite
- Brand
  
  Mitutoyo
- Type
  
  Plate (Without Stand)
  Table (With Stand)
- Popular Sizes
  
  450 x 450mm
  600 x 450mm
  900 x 600mm
  1200 x 900mm
  View all Sizes
- Grade
  
  Grade 0
  Grade 1
Surface Roughness
- Brand
  
  Accretech
  Mahr
  Moore & Wright
  Mitutoyo
  Tesa
- Popular Models
  
  Mitutoyo SJ-220
  Mitutoyo SJ-310
  Accretech Handysurf
- Method
  
  Skidded
  Skidless
  -----
  Standard
  Retractable
  Transverse Tracing
- Accessories
  
  Cables
  Detectors / Styli
  Extensions / Holders
  Reference Specimens
  Vices

Dial Indicators

Lever Indicators

Surface Roughness

A-F Categories Accessories Bore Gauges Bore Viewers Calibration Equipment Calipers Caliper Gauges Check Masters CMM Contracers Data Management Depth Gauges Depth Micrometers Dial Indicators Dial Indicators (Plunger) Dial Snap Gauges Dial Test Indictors (Lever) Engineers Squares Feeler Strips / Gauges Force Gauges

G-L Categories Gauge Blocks & Sets Granite Hardness Testers Height Gauges Height Masters Inside Micrometers Inspection Mirrors Intergrated Scales Laser Micrometers Leeb Hardness Testers Levels Lever Dial Indicators Linear Gauges Linear Scales

M-R Categories Magnets Magnification Micrometers Micrometers Heads Microscopes Pin Gauges Plastiform Plug Gauges Plunger Dial Indicators Pocket Comparators Precision Balances Profile Projectors Protractors Radius Gauges Replicating Compounds Roundness Testers Rules

S-Z Categories Search Arms Setting Rings Stands Steel Rules Straight Edges Surface Roughness Testers Thickness Gauges Thread Plug & Ring Gauges Torque Unimaster Universal Gauge Vee Blocks Video Bore Scopes Vision Systems Weighing Scales

Popular Categories Bore Gauges Calipers Dial Indicators Granite Height Gauges Lever Indicators Micrometers Replicating Compounds Surface Roughness Testers ----- Clearance Section

Popular Brands Accretech Bowers Eclipse Gedore H Roberts Käfer Kern Kroeplin Mahr Mitutoyo Moore & Wright Norbar Plastiform Red Range Sylvac Tesa Trimos Verdict

Brand Mahr Mitutoyo Moore & Wright Sylvac Tesa

Range 0-150mm / 0-6" 0-200mm / 0-8" 0-300mm / 0-12" 0-450mm / 0-18" 0-600mm / 0-24" 0-1500mm / 0-60" Larger than 1500mm / 60"

Measuring Units Metric / Imperial Metric Only Imperial Only

Display Type Dial Digital Vernier

Best Sellers Mitutoyo 500-196-30 - Only £84 Mitutoyo 500-752-20 - IP Rated Mitutoyo 500-197-30 - 200mm Mitutoyo 500-754-20 - 300mm

Brand Bowers Mahr Mitutoyo Moore & Wright Sylvac Tesa

Range 0-25mm / 0-1" 25-50mm / 1-2" 50-75mm / 2-3" 75-100mm / 3-4" 100-125mm / 4-5" 125-150mm / 5-6" 150-175mm / 6-7" 175-200mm / 7-8" 200-225mm / 8-9" 225-250mm / 9-10" 250-275mm / 10-11" 275-300mm / 11-12" Larger than 300mm / 12"

Popular Types Standard Interchangeable Micrometers Micrometer Sets ----- Blade Disc Non-Rotating Spindle Point Tube View all Types...

Display Type Digital Non-Digital

Measuring Units Metric & Imperial Metric Imperial

Accessories Setting Standards Stands

Brand Bowers Mahr Mitutoyo Tesa

Type Cylinder Pistol Grip Lever Grip Standard (Traditional) Micrometer Style

Supplied As Set Individual Units - Bowers Digital Bore Gauge Sets

Display Digital Non-Digital

Accessories Setting Rings

Brand Baty Käfer Mahr Mitutoyo Moore & Wright Sylvac Tesa

Range / Travel 5mm / 0.2" 12.7mm / 0.5" 25mm / 1" 50mm / 2" 100mm / 4" 150mm / 6"

Display Digital Non Digital

Measuring Units Metric / Imperial Metric Imperial

Accessories Contact Points Extensions Interchangeable Backs Lifting Levers Stands

Brand Girod Kafer Mahr Mitutoyo Moore & Wright Sylvac Tesa Verdict

Type Horizontal Parallel Pocket Type Vertical Type

Display Digital Non Digital

Measuring Units Metric / Imperial Metric Imperial

Accessories Styli Stands

Brand Mahr Mitutoyo Sylvac Tesa Trimos

Popular Models Mitutoyo LH-600 Mitutoyo QM Tesa Micro-Hite Trimos V3 Trimos V5

Range is Between... 0-200mm / 0-8" 0-400mm / 0-16" 0-700mm / 0-28" 0-1100mm / 0-44" Larger than 1100mm / 44"

Type Measuring Scribing

Display Digital Non Digital

Accessories Probes Scribers

Kits Starter Kit Essentials Kit Internal Complex Forms Kit Manual 2 Part Putty Kits View all Kits...

Catridges F20 Compound F30V Compound F50 Compound F35 Compound View all Catridges...

Putty Products M25 Putty M60 M70 M80LP M90 View Putty Kits

Accessories Application Gun Double Blade Cutter Nozzles Nozzle Tips

Brand Mitutoyo

Type Plate (Without Stand) Table (With Stand)

Popular Sizes 450 x 450mm 600 x 450mm 900 x 600mm 1200 x 900mm View all Sizes

Grade Grade 0 Grade 1

Brand Accretech Mahr Moore & Wright Mitutoyo Tesa

Popular Models Mitutoyo SJ-220 Mitutoyo SJ-310 Accretech Handysurf

Method Skidded Skidless ----- Standard Retractable Transverse Tracing

Accessories Cables Detector / Styli Extensions / Holders Reference Specimens Vices

Mitutoyo SJ-220 Best Selling SJ-220 - 178-742-13 View all

Home / Collections / Thread Gauges

Collection: Thread Gauges

Sort by:

JBO (320607) M42 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320607) M42 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £217.42

Sale price £217.42 Regular price ~~£241.58~~
Excl. VAT
JBO (320606) M40 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320606) M40 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £206.04

Sale price £206.04 Regular price ~~£228.93~~
Excl. VAT
JBO (320605) M39 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320605) M39 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £214.70

Sale price £214.70 Regular price ~~£238.55~~
Excl. VAT
JBO (320599) M32 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320599) M32 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £169.87

Sale price £169.87 Regular price ~~£188.74~~
Excl. VAT
JBO (320596) M28 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320596) M28 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £152.53

Sale price £152.53 Regular price ~~£169.48~~
Excl. VAT
JBO (320590) M20 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Sale

JBO (320590) M20 x 1.5mm Metric Fine No-Go Left Hand Thread Ring Gauge 6g

Regular price £118.65

Sale price £118.65 Regular price ~~£131.83~~
Excl. VAT
JBO (321012) M9 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (321012) M9 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £168.19

Sale price £168.19 Regular price ~~£186.88~~
Excl. VAT
JBO (321005) M8 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (321005) M8 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £163.34

Sale price £163.34 Regular price ~~£181.49~~
Excl. VAT
JBO (320997) M7 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320997) M7 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £163.34

Sale price £163.34 Regular price ~~£181.49~~
Excl. VAT
JBO (320989) M6 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320989) M6 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £130.09

Sale price £130.09 Regular price ~~£144.54~~
Excl. VAT
JBO (573938) M6 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (573938) M6 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £280.64

Sale price £280.64 Regular price ~~£311.82~~
Excl. VAT
JBO (320566) M5.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320566) M5.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £219.68

Sale price £219.68 Regular price ~~£244.09~~
Excl. VAT
JBO (321284) M5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (321284) M5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £77.04

Sale price £77.04 Regular price ~~£85.60~~
Excl. VAT
JBO (320981) M5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320981) M5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £130.09

Sale price £130.09 Regular price ~~£144.54~~
Excl. VAT
JBO (583816) M5 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (583816) M5 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £280.64

Sale price £280.64 Regular price ~~£311.82~~
Excl. VAT
JBO (320561) M4.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320561) M4.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £98.15

Sale price £98.15 Regular price ~~£109.06~~
Excl. VAT
JBO (320341) M4.5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320341) M4.5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £130.09

Sale price £130.09 Regular price ~~£144.54~~
Excl. VAT
JBO (321267) M4 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (321267) M4 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £77.04

Sale price £77.04 Regular price ~~£85.60~~
Excl. VAT
JBO (320974) M4 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320974) M4 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £84.63

Sale price £84.63 Regular price ~~£94.03~~
Excl. VAT
JBO (368764) M4 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (368764) M4 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £285.47

Sale price £285.47 Regular price ~~£317.19~~
Excl. VAT
JBO (320338) M3.5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320338) M3.5 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £90.10

Sale price £90.10 Regular price ~~£100.11~~
Excl. VAT
JBO (320539) M3.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320539) M3.5 x 0.5mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £123.68

Sale price £123.68 Regular price ~~£137.42~~
Excl. VAT
JBO (583817) M3.5 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (583817) M3.5 x 0.25mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £295.52

Sale price £295.52 Regular price ~~£328.35~~
Excl. VAT
JBO (320959) M3 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Sale

JBO (320959) M3 x 0.35mm Metric Fine No-Go Thread Ring Gauge 6g

Regular price £93.44

Sale price £93.44 Regular price ~~£103.82~~
Excl. VAT

About Us

Our Story
News & Events

Ordering & Services

Delivery Information
Returns Policy
Catalogue Library

Customer Support

Contact Us
FAQs
Privacy Policy
Terms & Conditions

Sign up for updates and offers

Join our mailing list for occasional updates and exclusive offers.

© 2025 H Roberts & Sons DI Ltd. All Rights Reserved. Company Registration Number 00857120. VAT no. 747884375

Choosing a selection results in a full page refresh.
Opens in a new window.