RJSPHH Sleeve-Height & Counterbore Gauge 6434 0-1.00" Range, 0.001" Graduation - Dial Indicator Kit

The RJSPHH 6434 is a precision sleeve-height and counterbore gauge kit engineered to measure sleeve projection, counterbore depth, piston-to-deck and valve protrusion across diesel and sleeved engines with 0–1.00" range and 0.001" graduations.

This compact kit puts a dial-indicator system and two interchangeable contact points into a single carrying case so technicians and experienced DIYers can make repeatable measurements in tight engine bays. Built from hardened components with dust- and water-resistant construction, the 6434 is supplied with an adjustable base, flat and pointed probes, a hex wrench and a calibrated dial indicator so you can switch between sleeve height and counterbore tasks quickly without losing accuracy.

How accurate and repeatable are the measurements?

The RJSPHH 6434 uses a 0–1.00" measurement range with 0.001" graduations and a 0–100 reading dial for fine resolution. Its hardened contact tips and stable base reduce flex and play during measurement, improving consistency compared with improvised tools.

• Graduation: 0.001" for fine incremental readings
• Dial reading: 0–100 to simplify interpretation
• Sturdy base and hardened parts minimize deflection
• Calibrated out of the box, ready for shop use

Which engines and applications is this gauge compatible with?

This gauge was designed for engines that use replaceable cylinder sleeves and counterbores, including many diesel and gasoline units. It's commonly used on heavy equipment and automotive engines where accurate sleeve projection and counterbore depth affect sealing and assembly clearance.

• Works with Caterpillar, Cummins, Detroit Diesel and other diesel brands
• Fits engines from Ford, John Deere, Volvo, Mack, Navistar and more
• Also suitable for passenger-car engines with sleeves (BMW, Toyota, Isuzu)
• Useful for piston-to-deck and valve protrusion checks during rebuilds

How do I switch between measuring sleeve height and counterbore depth?

Switching tasks is straightforward: the kit includes both a pointed contact for sleeve projection and a flat contact for counterbore depth. The hex wrench lets you change the contact quickly while keeping the dial indicator mounted to the adjustable base so you maintain the same reference plane.

• Pointed tip for precise sleeve-height contact
• Flat tip for measuring counterbore and flat surfaces
• Hex wrench included for fast tip swaps
• Single dial and base maintain consistent setup for multiple checks

What does the kit include and how durable is it?

The 6434 kit comes complete with a dial indicator, adjustable base, two contact points, a hex key and a protective carrying case. Parts are made from hardened materials and rated to resist dust and water exposure encountered in workshop environments.

• 1 x 4374 dial indicator, 1 x 4375 base
• 1 x 4230 flat contact, 1 x 4378 pointed contact
• Hex wrench and compact, foam-lined carrying case
• Hardened construction; dust- and water-resistant design

Who this tool is for: Automotive and heavy-equipment technicians, small engine rebuilders and serious DIY enthusiasts who need a durable, accurate gauge for sleeve projection, counterbore depth, piston-to-deck and valve protrusion checks. If you assemble or service sleeved cylinder engines and require repeatable, shop-ready measurements without bulky fixtures, the RJSPHH 6434 offers a complete, portable solution backed by a one-year warranty and responsive customer support.