Slide rule

Chinese Wooden Abacus with Sliding Frame - Primary Arithmetic Calculation Tool

High-Precision Microscope Micrometer Soft Rule for Particle Diameter Measurement and Calibration Sliding Line Tool

2M Versatile Foldable 10-Piece Sliding Rule - Lightweight Carpenter Measurement Tool

2M Versatile Folding Measuring Rule - 10-Piece Sliding Carpenter's Tool

Bahco CS400 400mm Combination Square

For marking 45° and 90° - Built in level bubble and metal scriber - With both metric and imperial markings

Slide Rule

(9780099530176 / unknown)

Eichhorn 100003405 Multicolour Classic Wooden Abacus for Kids | Fun Educational Counting Toys Frame & 100 Slidable Beads | Ages 3 Plus

Eichhorn's multicolor classic wooden abacus for kids helps them learn counting with a fun, educational toy featuring a frame and 100 slidable beads. Suitable for ages 3 and up.

60cm Precision Woodworking Angle Ruler for Sliding Table Saw Positioning

Precision Soft Rule Micrometer for Microscope - Particle Diameter Measurement Tool

Precision Soft Rule Micrometer for Microscope - Particle Diameter Measurement Tool

Precision Soft Rule Micrometer for Microscope Particle Diameter Measurement

Bahco 9048-350 Stainless Steel/Aluminum Carpenter's Square 350mm

60cm Precision Sliding Table Saw Angle Positioning Ruler

2M Folding Slide Rule with 10 Sections - Versatile Carpenter's Measuring Tool for Education and Interior Reading (6.6ft)