When it comes to measuring surfaces for roughness or contour profile the Kosaka Surfcorder SE-1200 instruments has no equal.  Consisting of a combined amplifier printer with a 25mm drive unit and universal pick-up this small compact instrument can carry out many measurements which larger competitive models are needed, such as curved surfaces, short lands, profiles  and very small bores.  Easily programmed via its keypad, selections of traverse distance, cut offs, curved, flat surface, vertical and horizontal magnifications and universal Ra and waveform parameters are quickly set, results witrh  profile graphs being rapidly printed out.  The SE-1200 is shown below with it pick-up  mouinted in a right angle format.

All Kosaka Surfcorders have been designed to measure difficult applications such as very small grooves and similar features.

Shown here is a piston groove not only being measured for Ra  roughness values but also straightness, squareness and parallelism. The latter conditions being achieved by turning the pick-up upside down after the initial traverse and re-measuring on the upper groove face., Kosaka software then calculates and prints the two traces at the same time on the graph paper clearly showing any errors in the groove shape. 

Many years ago we produced a small booklet for workshop personel which explained in basic terms surface finish roughness measurement.  If you would like a pdf copy please send us an e-mail.

Kosaka introduced 'universal' pick-ups with interchangeable styli  many years ago.  This enabled the cost of instruments to be kept down because only one pick-up was supplied,  not individual pick-ups to measure  features like small bores, recess, curves, small land etc.

The Surfcorder SE-1200, SE-1700 and SE-500 models all operate with a single PU-A pick-up accepting  many different types of styli and nosepieces.

The Kosaka Surfcorder SE-1700 comes with many driver options for different applications. Cylinder head flatness and surface finish is easily controlled using a small driver placed directly on the head.

Surfcorder SE-1200 and SE-1700 operating in  skidless mode solve  many difficult surface measurement problems.

Shown here is the AA5 stylus operating over a very short traverse length..Special styli are made to customer request.

Surfcorder pick-ups may be mounted at right angles to the driver to check between crank or camshaft shoulders or crank webs.

The photo shows the standard SE-1200 pick-up measuring circumferentially the bearing section even when the driver is travelling in skidless straight datum mode.

Surfcorders are designed to operate in skidless mode  to measure straightness and curved surfaces,   inbuilt levelling filters make the procedure very simple..

The illustration shows the AG5  stylus measuring  roughness over a curved component. This stylus type AG5 is also used for grooves and recess applications  down to 8mm depth and 1.5mm wide.

Special deep or long styli are made to customer request.

All Kosaka Surfcorder are designed to operate in skidless mode with ease.  When a limited surface is required to be measured, a maximum traverse can be achieved using a angled stylus tip to get into the corners. 

Special application styli are also made on customer request.

These highly effective roughness comparator scales make visual surface finish assessment easy.  The Electro-deposited nickel steel plates are replicas of common  machining processes,  are very hard wearing and ideal to have in your pocket to act as the first line of roughness control. Simply hold against the machined surface being controlled, compare by eye and  draw your finger nail across the surface.

Scales cover all types of machining process and values and  are also supplied fully certified if requested